preg_grep

Return array entries that match the pattern (PHP 4 )
array preg_grep ( string pattern, array input )

preg_grep() returns the array consisting of the elements of the input array that match the given pattern.

Since PHP 4.0.4, the results returned by preg_grep() are indexed using the keys from the input array. If this behavior is undesirable, use array_values() on the array returned by preg_grep() to reindex the values.

Example 812. preg_grep() example

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<?php
// return all array elements
// containing floating point numbers
$fl_array = preg_grep ("/^(\d+)?\.\d+$/", $array);
?>

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