Ignore Words?

[ZachMEdwards]

I'm looking for a pattern that will match everything but the words "Peanut Butter".

 

Thanks!

[Alex]

You mean take out everything out of a string that is not "Peanut Butter" or match a string if it does not contain "Peanut Butter"? Either way you don't need regex for this. If the former just to str_replace to remove "Peanut Butter" from the string and you have everything that's left. If the latter and you just want to see if a string does or does not contain "Peanut Butter" use strpos.

[ZachMEdwards]

I got it:

$pattern = '/I like ((?!Peanut Butter).)+/';

That matches:

I like cream cheese

I like toy cars

BUT IT DOESN'T MATCH:

I like Peanut Butter

 

Thanks

[Alex]

There's no need to load the memory expensive regular expression engine for something like this.

 

if(strpos($string, 'Peanut Butter') !== false) {
    // contains Peanut Butter
} else {
    // doesn't contain Peanut Butter
}