PHP if not in string [duplicate]

Question

I'am looking for a syntax that will do the following:

if('String' not in $string){

//do this

}

I am also looking for away to say

if('String' in $string){

//do this

}

Can anyone help, I have googled for solutions and they seem very confusing.

Thanks, J

Answer 1

I always use this:

if (stristr($string, "string")) {
    //String exists within $string
}else{
    //String does not exist
}

http://www.php.net/stristr