Description
array
preg_grep ( string pattern, array input [, int flags] )
preg_grep() returns the array consisting of
the elements of the input array that match
the given pattern.
flags can be the following flag:
- PREG_GREP_INVERT
If this flag is passed, preg_grep() returns the
elements of the input array that do not match
the given pattern.
This flag is available since PHP 4.2.0.
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 1. preg_grep() example
<?php
// return all array elements
// containing floating point numbers
$fl_array = preg_grep("/^(\d+)?\.\d+$/", $array);
?>
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