How to use addslashes() function in PHP? (code example)

The

addslashes() function is a built-in function of PHP, which can add backslashes before predefined characters in a string. The following article will introduce to you the usage of PHP addslashes() function. I hope it will be helpful to you. [Video tutorial recommendation: PHP tutorial]

PHP addslashes() function

addslashes() function Is a built-in function in PHP that returns an escaped string with a backslash in front of a predefined character. Can

Note: It will not use any of the specified characters in the parameters.

The predefined characters are:

● Single quotation mark (')

● Double quotation mark (")

● Reverse Slash (\)

● Empty (null) value

Basic syntax:

addslashes($string)

Parameters: The addslashes() function only accepts one parameter $string, which specifies the input string that needs to be escaped. We can also say that this parameter specifies a string in which we can add backslash before the predefined characters bar.

Return value: Returns an escaped string with backslashes, and the backslashes will be added in front of the predefined characters.

PHP addslashes() function usage example

The following is a code example to see how the addslashes() function is used.

Example 1:

<?php  
// 输入字符串
$str = addslashes(&#39;这是一个字母"p"。&#39;);  
  
// 输出
echo($str);  
?>

Output:

这是一个字母\"p\"。

Example 2:

<?php  
// 输入字符串
$str = addslashes("It&#39;s a dream!");  
  
// 输出
echo($str);  
?>

Output

It\'s a dream!

Description: The addslashes() function is one of two functions that are often used to prevent injection attacks. The other function is the htmlspecialchars() function. Both functions escape special characters.

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