04c07-1.php

来自「介绍PHP5的给类型函数应用」· PHP 代码 · 共 15 行

<?php
// A function that will take any number of arguments, and 
// return the first one that isn't equal to false
function coalesce() {
	// Loop through all arguments given
	foreach (func_get_args() as $value) {
		// If this argument doesn't equal false, return it
		if ($value) { return $value; }
	}
}

// Try this on a list of arguments.  Should return 42
echo coalesce('', 0, NULL, false, 1-1, 42, 'triccare', '0.0');
?>