CODEWITHSUNDEEP
phpregexpreg-replace
Neils
Neils

Reputation: 25

Using preg_replace for a-z A-Z 0-9 and Slash

I am using regex for replacing everything but a-z A-Z 0-9. I'll like to add that its not removing Slash ( / ) but anyhow it wont work. I dont found the error.

thx for your help! 

$string = preg_replace(array('/[^a-zA-Z0-9-]/', '/[ -]+/', '/^-|-$/'), array('', '-', ''), $string);

Upvotes: 1

Views: 6313

Answers (1)

Saleem
Saleem

Reputation: 8988

You'll need to escape forward slash. I'd try [^-a-z0-9\/]+ to search and replace all unwanted characters.

$re = "/[^-a-z0-9\\/]+/i"; 
$str = "asdkf\n43435&\$*k((/\\"; 
$subst = ""; 

$result = preg_replace($re, $subst, $str);

This will reduce string asdkf\n43435&\$*k((/\\ to asdkf43435k/

See demo https://regex101.com/r/vY2jC7/1

Fix: I forgot to add i modifier to ignore case as pointed out by @chris85 which will lead to ignoring upper case letters.

See Updated demo at See demo https://regex101.com/r/vY2jC7/2

Upvotes: 2

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