What are the inequality operators in php?

The inequality operators in php include: != and <>. They are all PHP comparison operators, used to compare two values ​​and return true if one value is not equal to the other value.

!=, not equal to operator, returns true if $x is not equal to $y.

<?php
$x = 17;  
$y = "17";

var_dump($x != $y); // 返回 false，因为值相等
?>

<>, not equal to operator, returns true if $x is not equal to $y.

<?php
$x = 17;  
$y = "17";

var_dump($x <> $y); // 返回 false，因为值相等
?>

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