preg_last_error

preg_grep

Return array entries that match the pattern

Description

array preg_grep ( string $pattern , array $input [, int $flags = 0 ] )

Returns the array consisting of the elements of the input array that match the given pattern.

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);
?>

See Also

PCRE Patterns
preg_quote
preg_match_all
preg_filter
preg_last_error