PHP Programming/Comparison

Commenting and Style PHP Programming
Comparison
Arrays

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
<> not equal synonym of !=
< 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 comparisonsEdit

This example sets and prints arrays.

  PHP Code:

<?php
$value1 = 5;
$value2 = 7;

if ($value1 == $value2) {
 print('value1 is equal to value2');
} else {
 print('value1 is unequal to value2');
}
?>

  PHP Output:

value1 is unequal to value2

  HTML Render:

value1 is unequal to value2


External LinksEdit


  Commenting and Style PHP Programming
Comparison
Arrays