PHP: Conditional statements

The if conditional statement is one of the most important features of many languages, PHP included.

It allows for conditional execution of code fragments.

PHP features an if structure that is similar to that of C:

if (expression)
  statement

The following example would display a string ‘a is bigger than b’ if $a is bigger than $b:

<?php

$a = 20;
$b = 10;

if ($a > $b)
  echo "a is bigger than b";

?>

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