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run code in 200+ php & hhvm versions
Bugs & Features
<?php /* 7. Write a PHP script to remove all characters from a string except a-z A-Z 0-9 or " ". Go to the editor Sample string : abcde$ddfd @abcd )der] Expected Result : abcdeddfd abcd der - See more at: http://www.w3resource.com/php-exercises/php-regular-expression-exercises.php#sthash.fzCJEK6c.dpuf */ $text = 'abcde$ddfd @abcd )der]'; $reg = "/[^a-zA-Z0-9 ]/"; print preg_replace($reg, "", $text); ?>
Output for 4.3.0 - 7.2.0
abcdeddfd abcd der