What function can be used to add a backslash before special characters in PHP content?

Special characters in PHP content can cause issues when displaying or processing data. To add a backslash before special characters in PHP content, you can use the `addslashes()` function. This function will add a backslash before characters like single quote ('), double quote ("), backslash (\), and NULL. 

$content = "This is a string with 'special' characters: \"quotes\" and backslashes \\";
$escaped_content = addslashes($content);

echo $escaped_content;

Keywords

PHP function addslashes special characters escape

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