Php ?:

?: php

<?php
    var_dump(5 ?: 0); // 5
    var_dump(false ?: 0); // 0
    var_dump(null ?: 'foo'); // 'foo'
    var_dump(true ?: 123); // true
    var_dump('rock' ?: 'roll'); // 'rock'
?>

What is php?

PHP stands for Hypertext Preprocessor. 
It is an open source server-side scripting language which is widely used for web development.
It supports many databases like MySQL, Oracle, Sybase, Solid, PostgreSQL, generic ODBC etc.

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'];
}

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