PHP quotemeta () function
Examples
Before predefined a backslash:
<?php
$str = "Hello world. (can you hear me?)";
echo quotemeta($str);
?>
$str = "Hello world. (can you hear me?)";
echo quotemeta($str);
?>
Running instance »
Definition and Usage
quotemeta () function to add the backslash in the string before some predefined characters.
Predefined characters:
- period(.)
- Backslash (\)
- Plus sign (+)
- Asterisk(*)
- question mark(?)
- Square brackets([])
- Caret (^)
- The dollar sign ($)
- Parentheses (())
Tip: This function can be used to escape characters have special meaning, such as in SQL (), [] and *.
Note: This function is binary safe.
grammar
quotemeta( string )
参数 | 描述 |
---|---|
string | 必需。规定要检查的字符串。 |
technical details
return value: | Returns a string quote metacharacters. |
---|---|
PHP version: | 4+ |
More examples
Example 1
Before several predefined a backslash:
<?php
$str1 = "1 + 1 = 2";
$str2 = "1 * 1 = 1";
$str3 = "Could you borrow me 5$?";
$str4 = "Are you not entertained? (I am..)";
$str5 = "The caret [ ^ ] Looks like a hat!";
echo quotemeta($str1)."<br>";
echo quotemeta($str2)."<br>";
echo quotemeta($str3)."<br>";
echo quotemeta($str4)."<br>";
echo quotemeta($str5)."<br>";
?>
$str1 = "1 + 1 = 2";
$str2 = "1 * 1 = 1";
$str3 = "Could you borrow me 5$?";
$str4 = "Are you not entertained? (I am..)";
$str5 = "The caret [ ^ ] Looks like a hat!";
echo quotemeta($str1)."<br>";
echo quotemeta($str2)."<br>";
echo quotemeta($str3)."<br>";
echo quotemeta($str4)."<br>";
echo quotemeta($str5)."<br>";
?>
Running instance »
PHP String Reference