What does "===" mean?

2018-05-29 13:45:34

I've noticed someone using the PHP operator === which I can't make sense out of. I've tried it with a function, and it corresponds in crazy ways.

What is the definition of this operator? I can't even find it in the declaration of PHP operators.

$a === $b     (Identical)

TRUE if $a is equal to $b , and they are of the same type. (introduced in PHP 4)

PHP Docs

http://www.php.net/ternary

$a == $b Equal TRUE if $a is equal to $b, except for (True == -1) which is still True.

$a === $b Identical TRUE if $a is equal to $b, and they are of the same type.

> "5" == 5;
True
> "5" === 5;
False

You can read here, short summary:

$a == $b Equal TRUE if $a is equal to $b after type juggling.

$a === $b Identical TRUE if $a is equal to $b, and they are of the same type.

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