Identical Operator

[MrHellism]

Hey friends, I just started learning php. I want to know the difference between == and === 

 

I exactly want to know the comment section of the given code below.

 

Thanks. 

 

<?php
$mystring = 'abc';
$findme   = 'a';
$pos = strpos($mystring, $findme);

// The !== operator can also be used.  Using != would not work as expected
// because the position of 'a' is 0. The statement (0 != false) evaluates 
// to false.
if ($pos !== false) {
     echo "The string '$findme' was found in the string '$mystring'";
         echo " and exists at position $pos";
} else {
     echo "The string '$findme' was not found in the string '$mystring'";
}
?>

[cyberRobot]

Perhaps the following will help:

http://php.net/manual/en/language.operators.comparison.php

[cyberRobot]

Also, in case it helps, the documentation for strpos() explains why you need to use the === or !== operator.

http://php.net/manual/en/function.strpos.php

 

See the pink Warning box in the Return Values section.

[MrHellism]

Thanks a lot