Функции за регулярни изрази (съвместими с Perl)
PHP Manual

preg_grep

(PHP 4, PHP 5)

preg_grepReturn array entries that match the pattern

Описание

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 .

Параметри

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 .

Връщани стойности

Returns an array indexed using the keys from the input array.

Дневник на промените

Версия Описание
4.2.0 The flags parameter was added.
4.0.4

Prior to this version, the returned array was indexed regardless of the keys of the input array.

If you want to reproduce this old behavior, use array_values() on the returned array to reindex the values.

Примери

Example #1 preg_grep() example

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


Функции за регулярни изрази (съвместими с Perl)
PHP Manual