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PHP Quiz PHP CertificatePHP addslashes() Function
Example
Add a backslash in front of each double quote ("):
<?php
$str = addslashes('What does "yolo" mean?');
echo($str);
?>
$str = addslashes('What does "yolo" mean?');
echo($str);
?>
Run example »
Definition and Usage
The addslashes() function returns a string with backslashes in front of predefined characters.
The predefined characters are:
- single quote (')
- double quote (")
- backslash (\)
- NULL
Tip: This function can be used to prepare a string for storage in a database and database queries.
Note: PHP runs addslashes() on all GET, POST, and COOKIE data by default. Therefore you should not use addslashes() on strings that have already been escaped, this will cause double escaping. The function get_magic_quotes_gpc() can be used to check this.
Syntax
addslashes(string)
| Parameter | Description |
|---|---|
| string | Required. Specifies the string to be escaped |
Technical Details
| Return Value: | Returns the escaped string |
|---|---|
| PHP Version: | 4+ |
More Examples
Example 1
Add backslashes to the predefined characters in a string:
<?php
$str = "Who's Peter Griffin?";
echo $str . " This is not safe in a database query.<br>";
echo addslashes($str) . " This is safe in a database query.";
?>
$str = "Who's Peter Griffin?";
echo $str . " This is not safe in a database query.<br>";
echo addslashes($str) . " This is safe in a database query.";
?>
Run example »
Complete PHP String Reference
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