Index of function thing

do you know of any thingy in php where it checks if a variable has something in it?

$variable = \" hi how are you today thing\";
like ifhasthing('thing', '$variable');

and this would of course have \"thing\"

stristr or strstr or something along those lines.. you will want to check the String section in the PHP manual @ http://www.php.net/manual/

isset($variable) will be true if the variable is set otherwise it will be false.

I just didnt know what it would be. but in case any1 else has this problem, here is how you do it.

$string = "PHP";
$container = "I like to play with PHP in a bucket of shrimp";

if(strstr($container,$string)) {
echo "found it";
} else {
echo "not found.";
}

in this case, it would be found because the string is somewhere in the container.