check a variable for a word

[c_pattle]

I was wondering if it is possible to check the content for a variable for a certain work.  For example say a variable called "$variable1" was equal to "one, two, three, four, five".  How can I check to see if the variable contain the word "four"?  Thanks for any help. 

[litebearer]

Might check...

http://www.w3schools.com/php/func_string_stripos.asp

[Oziam]

$string = 'four';

$variable1 = array("one","two","three","four","five");

 

echo in_array($string, $variable1) ? 'TRUE' : 'FALSE';

 

or

 

if(in_array($string, $variable1)){

echo 'TRUE'; // do something

}

else{

echo 'FALSE'; // do something else

}