reference/posix/constants.xml
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<title><function>posix_access</function> constants</title>
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<note>
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<para>
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These constants are available starting with PHP 5.1.0. Please note that
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some of them may not be available on your system.
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Please note that some of these constants may not be available on every system.
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</para>
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</note>
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<variablelist>
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<varlistentry xml:id="constant.posix-f-ok">
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<term>
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<constant>POSIX_F_OK</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-r-ok">
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<term>
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<constant>POSIX_R_OK</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-w-ok">
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<term>
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<constant>POSIX_W_OK</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-x-ok">
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<term>
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<constant>POSIX_X_OK</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<title><function>posix_mknod</function> constants</title>
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<note>
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<para>
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These constants are available starting with PHP 5.1.0. Please note that
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some of them may not be available on your system.
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Please note that some of them may not be available on your system.
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</para>
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</note>
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<variablelist>
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<varlistentry xml:id="constant.posix-s-ifblk">
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<term>
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<constant>POSIX_S_IFBLK</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-s-ifchr">
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<term>
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<constant>POSIX_S_IFCHR</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-s-ififo">
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<term>
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<constant>POSIX_S_IFIFO</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-s-ifreg">
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<term>
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<constant>POSIX_S_IFREG</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-s-ifsock">
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<term>
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<constant>POSIX_S_IFSOCK</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<title><function>posix_setrlimit</function> constants</title>
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<note>
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<para>
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These constants are available starting with PHP 7.0.0. Please note that
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some of them may not be available on your system.
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Please note that some of them may not be available on your system.
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</para>
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</note>
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<note>
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<varlistentry xml:id="constant.posix-rlimit-as">
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<term>
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<constant>POSIX_RLIMIT_AS</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-core">
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<term>
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<constant>POSIX_RLIMIT_CORE</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-cpu">
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<term>
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<constant>POSIX_RLIMIT_CPU</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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The maximum amount of CPU time that the process can use, in seconds.
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When the soft limit is hit, a <literal>SIGXCPU</literal> signal will be
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When the soft limit is hit, a <constant>SIGXCPU</constant> signal will be
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sent, which can be caught with <function>pcntl_signal</function>.
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Depending on the operating system, additional <literal>SIGXCPU</literal>
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Depending on the operating system, additional <constant>SIGXCPU</constant>
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signals may be sent each second until the hard limit is hit, at which
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point an uncatchable <literal>SIGKILL</literal> signal is sent.
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point an uncatchable <constant>SIGKILL</constant> signal is sent.
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</simpara>
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<simpara>
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See also <function>set_time_limit</function>.
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<varlistentry xml:id="constant.posix-rlimit-data">
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<term>
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<constant>POSIX_RLIMIT_DATA</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-fsize">
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<term>
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<constant>POSIX_RLIMIT_FSIZE</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-locks">
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<term>
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<constant>POSIX_RLIMIT_LOCKS</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-memlock">
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<term>
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<constant>POSIX_RLIMIT_MEMLOCK</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-msgqueue">
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<term>
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<constant>POSIX_RLIMIT_MSGQUEUE</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-nice">
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<term>
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<constant>POSIX_RLIMIT_NICE</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-nofile">
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<term>
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<constant>POSIX_RLIMIT_NOFILE</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-nproc">
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<term>
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<constant>POSIX_RLIMIT_NPROC</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-rss">
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<term>
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<constant>POSIX_RLIMIT_RSS</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-rtprio">
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<term>
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<constant>POSIX_RLIMIT_RTPRIO</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-rttime">
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<term>
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<constant>POSIX_RLIMIT_RTTIME</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-sigpending">
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<term>
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<constant>POSIX_RLIMIT_SIGPENDING</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-stack">
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<term>
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<constant>POSIX_RLIMIT_STACK</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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<varlistentry xml:id="constant.posix-rlimit-infinity">
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<term>
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<constant>POSIX_RLIMIT_INFINITY</constant>
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(<type>integer</type>)
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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</simpara>
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</listitem>
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</varlistentry>
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<varlistentry xml:id="constant.posix-rlimit-kqueues">
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<term>
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<constant>POSIX_RLIMIT_KQUEUES</constant>
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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The maximum number of kqueues this user id is allowed to create (FreeBSD).
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Available as of PHP 8.1.0.
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</simpara>
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</listitem>
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</varlistentry>
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<varlistentry xml:id="constant.posix-rlimit-npts">
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<term>
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<constant>POSIX_RLIMIT_NPTS</constant>
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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The maximum number of pseudo-terminals this user id is allowed to create (FreeBSD).
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Available as of PHP 8.1.0.
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</simpara>
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</listitem>
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</varlistentry>
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</variablelist>
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</section>
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</appendix>
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<section xml:id="posix.constants.pathconf">
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<title><function>posix_pathconf</function> constants</title>
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<variablelist>
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<varlistentry xml:id="constant.posix-pc-link-max">
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<term>
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<constant>POSIX_PC_LINK_MAX</constant>
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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The maximum number of links a given file or directory can have.
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Available as of PHP 8.3.0.
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</simpara>
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</listitem>
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</varlistentry>
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<varlistentry xml:id="constant.posix-pc-max-canon">
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<term>
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<constant>POSIX_PC_MAX_CANON</constant>
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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The maximum number of bytes in a terminal canonical input buffer
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(pathname being then a character special file).
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Available as of PHP 8.3.0.
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</simpara>
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</listitem>
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</varlistentry>
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<varlistentry xml:id="constant.posix-pc-max-input">
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<term>
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<constant>POSIX_PC_MAX_INPUT</constant>
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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The maximum number of bytes of a terminal input queue
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(pathname being then a character special file).
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Available as of PHP 8.3.0.
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</simpara>
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</listitem>
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</varlistentry>
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<varlistentry xml:id="constant.posix-pc-name-max">
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<term>
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<constant>POSIX_PC_NAME_MAX</constant>
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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The maximum number of characters for a file name alone, not its path.
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Available as of PHP 8.3.0.
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</simpara>
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</listitem>
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</varlistentry>
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<varlistentry xml:id="constant.posix-pc-path-max">
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<term>
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<constant>POSIX_PC_PATH_MAX</constant>
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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The maximum number of characters for a full path name.
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Available as of PHP 8.3.0.
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</simpara>
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</listitem>
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</varlistentry>
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<varlistentry xml:id="constant.posix-pc-pipe-buf">
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<term>
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<constant>POSIX_PC_PIPE_BUF</constant>
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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The maximum number of bytes that can be written to a pipe in one operation.
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Available as of PHP 8.3.0.
459
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</simpara>
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</listitem>
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</varlistentry>
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<varlistentry xml:id="constant.posix-pc-chown-restricted">
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<term>
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<constant>POSIX_PC_CHOWN_RESTRICTED</constant>
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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If privileges are required to be allow <function>chown</function> to work.
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Available as of PHP 8.3.0.
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</simpara>
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</listitem>
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</varlistentry>
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<varlistentry xml:id="constant.posix-pc-no-trunc">
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<term>
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<constant>POSIX_PC_NO_TRUNC</constant>
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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If a file name (or files under a directory) is longer than <constant>POSIX_PC_NAME_MAX</constant>.
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Available as of PHP 8.3.0.
483
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</simpara>
484
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</listitem>
485
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</varlistentry>
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<varlistentry xml:id="constant.posix-pc-alloc-size-min">
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<term>
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<constant>POSIX_PC_ALLOC_SIZE_MIN</constant>
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+
(<type>int</type>)
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+
</term>
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<listitem>
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<simpara>
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+
The minimum number of bytes of storage allocated for any portion of a file.
494
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Available as of PHP 8.3.0.
495
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</simpara>
496
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</listitem>
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</varlistentry>
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<varlistentry xml:id="constant.posix-pc-alloc-symlink-max">
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<term>
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<constant>POSIX_PC_ALLOC_SYMLINK_MAX</constant>
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(<type>int</type>)
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</term>
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<listitem>
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<simpara>
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The maximum number of symbolic links a given file or directory can have.
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Available as of PHP 8.3.0.
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+
</simpara>
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</listitem>
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</varlistentry>
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</variablelist>
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</section>
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+

513
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<section xml:id="posix.constants.sysconf">
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<title><function>posix_sysconf</function> constants</title>
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<variablelist>
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+
<varlistentry xml:id="constant.posix-sc-arg-max">
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<term>
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+
<constant>POSIX_SC_ARG_MAX</constant>
519
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(<type>int</type>)
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+
</term>
521
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<listitem>
522
+
<simpara>
523
+
The maximum number of bytes the arguments (and environment variables) can have.
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+
Available as of PHP 8.3.0.
525
+
</simpara>
526
+
</listitem>
527
+
</varlistentry>
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+
<varlistentry xml:id="constant.posix-sc-pagesize">
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+
<term>
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+
<constant>POSIX_SC_PAGESIZE</constant>
531
+
(<type>int</type>)
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+
</term>
533
+
<listitem>
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+
<simpara>
535
+
The number of bytes of the current page.
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+
Available as of PHP 8.3.0.
537
+
</simpara>
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+
</listitem>
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+
</varlistentry>
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+
<varlistentry xml:id="constant.posix-sc-nprocessors-conf">
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+
<term>
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+
<constant>POSIX_SC_NPROCESSORS_CONF</constant>
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+
(<type>int</type>)
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+
</term>
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+
<listitem>
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+
<simpara>
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+
The number of cpus configured system wise.
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+
Available as of PHP 8.3.0.
549
+
</simpara>
550
+
</listitem>
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+
</varlistentry>
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+
<varlistentry xml:id="constant.posix-sc-nprocessors-onln">
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+
<term>
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+
<constant>POSIX_SC_NPROCESSORS_ONLN</constant>
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+
(<type>int</type>)
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+
</term>
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+
<listitem>
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+
<simpara>
559
+
The number of cpus currently active system wise.
560
+
Available as of PHP 8.3.0.
561
+
</simpara>
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+
</listitem>
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+
</varlistentry>
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</variablelist>
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</section>
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</appendix>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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