phpcomparisonoperators

The 3 different comparisons, =, ==, === in PHP

What is the difference between =, ==, and ===?

I think using one = is to declare a variable while == is for a comparison condition and lastly === is for comparing values of declared variables.

Solution

  • You have = the assignment operator, == the 'equal' comparison operator and === the 'identical' comparison operator.

    $a = $b    Assign     Sets $a to be equal to $b.
$a == $b   Equal      TRUE if $a is equal to $b.
$a === $b  Identical  TRUE if $a is equal to $b, and they are of the same type.
                      (introduced in PHP 4)

    For more info on the need for == and ===, and situations to use each, look at the docs.