im new to regular expressions and would like to decipher this.
return preg_replace("/[<>]/", '_', $string);
thanks!!
im new to regular expressions and would like to decipher this. return preg_replace(/[<>]/, ‘_’,
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im new to regular expressions and would like to decipher this.
return preg_replace("/[<>]/", '_', $string);
thanks!!
It means “replace each
<or>inside the string$stringwith an underscore, then return the result”.The slashes (
/) delimit the regular expression. You can use other characters instead (preg_replace("#[<>]#", '_', $string);would work just as well and makes sense if your regex contains a slash itself).[]brackets denote a character class. They mean essentially “one character of those contained within the class”, so[<>]means “either a<or a>“.You can also negate a character class by starting it with a
^:[^<>]means “any character except<or>.