preg_grep
(PHP 4, PHP 5)
preg_grep — Return array entries that match the pattern
Description
array preg_grep
( string $pattern
, array $input
[, int $flags
] )
Parameters
-
pattern
-
The pattern to search for, as a string.
-
input
-
The input array.
-
flags
-
If set to PREG_GREP_INVERT, this function returns
the elements of the input array that do not match
the given pattern
.
Return Values
Returns an array indexed using the keys from the
input
array.
Examples
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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