php equality operator string code example

Example 1: string compare in php

//In php to compare two string we can use strcmp() function
Syntax
strcmp(string1,string2);

//If both string is same then it will return 0
<?php
echo strcmp("Hello world!","Hello world!");
?>

Example 2: php ?:

// Example usage for: Ternary Operator
$action = $_POST['action'] ?: 'default';

// The above is identical to this if/else statement
if (empty($_POST['action'])) {
    $action = 'default';
} else {
    $action = $_POST['action'];
}