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@NogDogJun 05.2008 — #Yes, str_replace() will be faster in simple situations where it can do the same thing as preg_replace() is a single command. preg_replace()'s ability to use regular expressions will however probably be more efficient in cases where you would have to use multiple calls to str_replace() to accomplish the same thing.
In this case, however, I'm not sure which would be more efficient (nor would I really care 99.99% of the time) since you could do it in one str_replace() by using an array:
[RESOLVED] preg_replace versus str_replace
Why do I keep seeing:
$url = preg_replace(“/s/e” , “_” , $url);
when it seems simpler to do:
$url = str_replace(” ” , “_” , $url);
Do they really do the same thing? which is faster? whats the e for?
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@NogDogJun 05.2008 — #Yes, str_replace() will be faster in simple situations where it can do the same thing as preg_replace() is a single command. preg_replace()'s ability to use regular expressions will however probably be more efficient in cases where you would have to use multiple calls to str_replace() to accomplish the same thing.In this case, however, I'm not sure which would be more efficient (nor would I really care 99.99% of the time) since you could do it in one str_replace() by using an array:
[code=php]
$string = str_replace(array(' ', "n", "r", "t"), '_', $string);
[/code]