is there an "if in" operator in PHP?

i was looking to something that checks whether a string exists inside another, as in p开发者_高级运维ython:

print "a" in "aloha"

wold return 1

strpos()

$pos = strpos("aloha", "a");

EDIT

You can verify the existence of string by putting IF like this:-

if (strpos("aloha", "a") !== false) {
     echo "The string was found";

} else {
     echo "The string was not found";
}

strpos("aloha", "a") !== false

Returns true is the letter a is in the word aloha.

Note: Its important to use !== and not != as in PHP 0 == false.

try

$mystring = 'aloha';
$findme   = 'a';
$pos = strpos($mystring, $findme);
echo $pos // return 0 

if ($pos === false) {
    echo "The string '$findme' was not found in the string '$mystring'";
} else {
    echo "The string '$findme' was found in the string '$mystring'";
    echo " and exists at position $pos";
}

You can use the srtpos() function to check if the position of a string inside another is not false -- i.e. if the string contains the other :

if (strpos("aloha", "a") !== false) {
    // a is contained in aloha
}

The first parameter being the haystack -- the string that could contain what you are searching ; and the second parameter being the needle -- the string you are searching.

As noted in the manual (quoting) :

This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE, such as 0 or "".
Please read the section on Booleans for more information.
Use the === operator for testing the return value of this function.

If you want the search to be case-insentive, you'll use the stripos() function, btw.