reference/network/functions/headers-sent.xml
b4989f5c1f052314ff2c36e9cc3d56b3a7a24e9b
b4989f5c1f052314ff2c36e9cc3d56b3a7a24e9b
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&reftitle.description;
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<methodsynopsis>
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<type>bool</type><methodname>headers_sent</methodname>
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<methodparam choice="opt"><type>string</type><parameter role="reference">file</parameter></methodparam>
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<methodparam choice="opt"><type>int</type><parameter role="reference">line</parameter></methodparam>
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<methodparam choice="opt"><type>string</type><parameter role="reference">filename</parameter><initializer>&null;</initializer></methodparam>
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<methodparam choice="opt"><type>int</type><parameter role="reference">line</parameter><initializer>&null;</initializer></methodparam>
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</methodsynopsis>
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<para>
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Checks if or where headers have been sent.
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>file</parameter></term>
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<term><parameter>filename</parameter></term>
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<listitem>
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<para>
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If the optional <parameter>file</parameter> and
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If the optional <parameter>filename</parameter> and
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<parameter>line</parameter> parameters are set,
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<function>headers_sent</function> will put the PHP source file name
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and line number where output started in the <parameter>file</parameter>
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and line number where output started in the <parameter>filename</parameter>
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and <parameter>line</parameter> variables.
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</para>
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<note>
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<para>
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If the output has started before executing the PHP source file (for example due to a startup error),
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the <parameter>filename</parameter> parameter will be set to an empty string.
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</para>
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</note>
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</listitem>
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</varlistentry>
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<varlistentry>
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</refsect1>
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</refentry>
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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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