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Equality Operators and Numeric Values

Operator    Example                      Meaning ==          $num1 == $num2               $num1 is equal to $num2 !=          $num1 != $num2               $num1 is not equal to $num2 <=>         $num1 <=> $num2              $num1 is compared to $num2 with a signed return;                                           1 if $num1 is greater than $num2,                                           0 if $num1 is equal to $num2, and                                           -1 if $num1 is less than $num2