In this article, you will learn how to use declare keyword in PHP. The declare keyword in PHP sets an execution directive for a block of code. If the declare statement is not followed by a block then the directive applies to the rest of the code in the file.
examples of the DECLARE keyword
Example 1. In this example, we run a function after each instruction.
<?php
$count = 0;
function example() {
global $count;
$count++;
echo "$count instructions executed<br>";
}
register_tick_function('example');
declare(ticks=1) {
$cars = ["Ford", "Volvo", "BMW"];
foreach($cars as $car) {
echo "$car <br>";
}
}
?>
