Conditional Structures¶
Conditional structures are instructions which run different code, based on a condition.
This includes if-elsif-then, switch(), match(), the ternary operators ? … : and ?: and the Coalesce operator ??.
<?php
if (!function_exists('foo')) {
function foo() {
// doSomething
}
}
?>
Related : Switch, Match, If Then Else, Coalesce Operator, Ternary Operator