(PHP 4 >= 4.0.0)
preg_grep -- Return array entries that match the pattern
Description
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.
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Example 1. preg_grep() example
// return all array elements
// containing floating point numbers
$fl_array = preg_grep ("/^(\d+)?\.\d+$/", $array);
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