PHP addslashes() function

by Online Tutorials Library July 22, 2022

PHP addslashes() Function

PHP addslashes() function is used to return a quote string with slashes. It works with some characters:

Single quote (‘)
Double quote(“)
Blackslash(|)
NUL (the NUL byte)

Syntax:

Parameter	Description	Required/Optional
string	String to be escaped	Required

Example 1

  <?php   $str = ‘What does “WHO” mean?’;  echo “Your string is :”.$str;  echo “<br>”.”By using addslashes() function the result  is”.addslashes($str);   ?>   

Output:

Your string is :What does "WHO" mean?  By using addslashes() function the result isWhat does "WHO" mean?

Example 2

  <?php  $str = “Who’s the father of PHP?”;  echo $str . ” This is not safe in a database query.<br>”;  echo addslashes($str) . ” This is safe in a database query.”;  ?>  

Output:

Who's the father of PHP? This is not safe in a database query.  Who's the father of PHP? This is safe in a database query.

Example 3

  <?php  $str =  “Wow’ PHP?”;  eval(“echo ‘” . addslashes($str) . “‘;”);  ?>  

Output:

Wow' PHP?

A use case of addslashes() is escaping the abovementioned characters in a string that is to be evaluated by PHP:

Example 4

  <?php  $str = “Is The Father of PHP’Rasmus?”;  //Is The Father of PHP’Rasmus?  echo addslashes($str);  ?>  

Output:

Is The Father of PHP'Rasmus?

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PHP addslashes() function

PHP addslashes() Function

Syntax:

Example 1

Example 2

Example 3

A use case of addslashes() is escaping the abovementioned characters in a string that is to be evaluated by PHP:

Example 4

MySQL Math

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