PHP 5.4.36 Released

quotemeta

(PHP 4, PHP 5)

quotemetaQuote meta characters

说明

string quotemeta ( string $str )

Returns a version of str with a backslash character (\) before every character that is among these:

. \ + * ? [ ^ ] ( $ )

参数

str

The input string.

返回值

Returns the string with meta characters quoted, or FALSE if an empty string is given as str.

注释

Note: 此函数可安全用于二进制对象。

参见

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User Contributed Notes 3 notes

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4
kumarkulandai at gmail dot com
5 years ago
<?php
$str
= "Hello world. (can you hear me?)";
echo
quotemeta($str);
?>

The output of the code above will be:
Hello world\. \(can you hear me\?\)
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2
George Adams
8 years ago
Took me a while to realize this was NOT the command I wanted for escaping potentially harmful characters in a string that would be used as part of a system command.  Instead, I needed either escapeshellarg() (http://www.php.net/manual/en/function.escapeshellarg.php) or escapeshellcmd() (http://www.php.net/manual/en/function.escapeshellcmd.php)
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2
Anonymous
13 years ago
This function escapes characters that have special meaning in regular expressions.  preg_quote() <http://php.net/manual/en/function.preg-quote.php> has similar functionality, but is more powerful since it escapes more characters (including one user-specified character).
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