PHP Programming/Comparison

The operators for comparison in PHP are the following: Operator Name Returns true, if… == equal left & right side equals === identical == is true, and both sides have the same type != not equal left & right are not equal after type juggling <> not equal synonym of != !== not identical != is true, or their types differ < less than left side is strictly less than right side > greater than left side is strictly greater than right side <= less than or equal to left side is less than or equal to right side >= greater than or equal to left side is greater than or equal to right side <=> spaceship integer less than, equal to, or greater than zero when left side is respectively less than, equal to, or greater than right side (≥ PHP 7). $a ?? $b?? $c null coalescing first operand from left to right that exists and is not NULL. NULL, if no values are defined and that not NULL (≥ PHP 7). Example of comparisons This example sets and prints arrays. <?php $value1 = 5; $value2 = 7; if ($value1 == $value2) { print('value1 is equal to value2'); } else { print('value1 is unequal to value2'); } ?> value1 is unequal to value2 value1 is unequal to value2 External Links PHP Manual on Comparison Operators