What is the difference between == and === in php [duplicate]

This question already has answers here: How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators differ? (13 answers) Closed 5 months ago.

Is there any difference between == 开发者_开发问答and === in PHP? Both seem to work fine for me when i use them in a conditional statement.

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• $a == $b

Equal true: if $a is equal to $b, after type juggling.

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• $a === $b

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

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Identical:

$a === $b

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

Equal:

$a == $b

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

Read here for more: http://www.php.net/manual/en/language.operators.comparison.php