PHP supports three comment styles. Comments are ignored by the PHP engine.
// single line# single line (shell style)/* multi-line */Documentation comments use /** ... */ with tags like @param, @return. IDEs and tools read these.
<?php
// Single-line comment
# Also single-line (less common)
/*
* Multi-line comment
* Spans multiple lines
*/
/**
* Adds two numbers.
*
* @param int $a First number
* @param int $b Second number
* @return int Sum
*/
function add(int $a, int $b): int {
return $a + $b;
}
?>