preg_quote

Podręcznik PHP
Poprzedni		Następny

Opis

string preg_quote ( string str [, string delimiter] )

preg_quote() takes str and puts a backslash in front of every character that is part of the regular expression syntax. This is useful if you have a run-time string that you need to match in some text and the string may contain special regex characters.

The special regular expression characters are: . \ + * ? [ ^ ] $ ( ) { } = ! < > | :

Parametry

str: The input string.
delimiter: If the optional delimiter is specified, it will also be escaped. This is useful for escaping the delimiter that is required by the PCRE functions. The / is the most commonly used delimiter.

Zwracane wartości

Returns the quoted string.

Przykłady

Przykład 1. preg_quote() example


<?php
$keywords = '$40 for a g3/400';
$keywords = preg_quote($keywords, '/');
echo $keywords; // returns \$40 for a g3\/400
?>

Przykład 2. Italicizing a word within some text


<?php
// In this example, preg_quote($word) is used to keep the
// asterisks from having special meaning to the regular
// expression.

$textbody = "This book is *very* difficult to find.";
$word = "*very*";
$textbody = preg_replace ("/" . preg_quote($word) . "/",
                          "<i>" . $word . "</i>",
                          $textbody);
?>

Poprzedni	Spis treści	Następny
preg_match	Początek rozdziału	preg_replace_callback

preg_quote

Opis

Parametry

Zwracane wartości

Przykłady

Notatki