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Difference Between AND Operator in PHP
'!==' comparison operator
'!==' operator checks the unequality of two objects with a type check. It does not converts the datatype and makes a typed check.For example 1 !== '1' will results true.
'==!' comparison operator
'==!' operator is combination of two operators and can be written as == (!operands).
Example
Following example, shows usage of '!==' vs '==!' operators.
<!DOCTYPE html>
<html>
<head>
<title>PHP Example</title>
</head>
<body>
<?php
$x = true;
$y = false;
echo '$x !== operator $y = ';
// $x not equals to $y
// so true returned
var_dump($x !== $y);
print("<br/>");
echo '$x ==! operator $y = ';
// !$y is true which is same as $x
// so true returned
var_dump($x ==! $y);
?>
</body>
</html>
Output
$x !== operator $y = bool(true) $x ==! operator $y = bool(true)
Updated on: 2020-01-13T06:33:04+05:30
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