reference/array/functions/array-unique.xml
3ba15fd3dfb8196a1762b1a21a14311e0279284b
3ba15fd3dfb8196a1762b1a21a14311e0279284b
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<methodsynopsis>
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<type>array</type><methodname>array_unique</methodname>
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<methodparam><type>array</type><parameter>array</parameter></methodparam>
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<methodparam choice="opt"><type>int</type><parameter>sort_flags</parameter><initializer>SORT_STRING</initializer></methodparam>
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<methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer><constant>SORT_STRING</constant></initializer></methodparam>
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</methodsynopsis>
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<para>
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Takes an input <parameter>array</parameter> and returns a new array
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</para>
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<para>
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Note that keys are preserved. If multiple elements compare equal under
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the given <parameter>sort_flags</parameter>, then the key and value of
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the given <parameter>flags</parameter>, then the key and value of
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the first equal element will be retained.
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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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<term><parameter>sort_flags</parameter></term>
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<term><parameter>flags</parameter></term>
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<listitem>
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<para>
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The optional second parameter <parameter>sort_flags</parameter>
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may be used to modify the sorting behavior using these values:
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The optional second parameter <parameter>flags</parameter>
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may be used to modify the comparison behavior using these values:
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</para>
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<para>
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Sorting type flags:
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Comparison type flags:
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<itemizedlist>
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<listitem>
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<simpara><constant>SORT_REGULAR</constant> - compare items normally
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<row>
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<entry>7.2.0</entry>
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<entry>
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If <parameter>sort_flags</parameter> is <constant>SORT_STRING</constant>,
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If <parameter>flags</parameter> is <constant>SORT_STRING</constant>,
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formerly <parameter>array</parameter> has been copied and non-unique
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elements have been removed (without packing the array afterwards), but
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now a new array is built by adding the unique elements. This can result
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</para>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>array_count_values</function></member>
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</simplelist>
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</para>
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</refsect1>
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<refsect1 role="notes">
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&reftitle.notes;
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<note>
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</note>
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</refsect1>
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</refentry>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>array_count_values</function></member>
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</simplelist>
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</para>
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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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