reference/array/functions/array-flip.xml
8a7836bf884a89125227e59be5ece70dca724567
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</para>
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<para>
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Note that the values of <parameter>array</parameter> need to be valid
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keys, i.e. they need to be either <type>integer</type> or
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keys, i.e. they need to be either <type>int</type> or
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<type>string</type>. A warning will be emitted if a value has the wrong
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type, and the key/value pair in question <emphasis>will not be included
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in the result</emphasis>.
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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Returns the flipped array on success and &null; on failure.
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Returns the flipped array.
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</para>
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</refsect1>
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