Question

How to remove non alphanumeric characters from a string in PHP

Answer 1

$s = "@#$23PHP#(%*/?999~`;";

$s = preg_replace( '/[\W]/', '', $s);

echo $s;
      
 
/*
run:
 
23PHP999 
    
*/

 

70+ SQL courses for beginners and professionals

Answer 2

$s = "@#$23PHP#(%*/?999~`;";

$s = preg_replace( '/[^a-z0-9]/i', '', $s); 

echo $s;
      
 
/*
run:
 
23PHP999 
    
*/

 

70+ SQL courses for beginners and professionals