04c02-1.php

介绍PHP5的给类型函数应用

<?php
$name = 'Ramsey';

function print_and_change_name() {
	// Declare the variable $name to be accessible within this function
	global $name;
	
	// Output this name, and then change the name.
	echo "<p>{$name}</p>";
	$name = 'Heather';
}

// Call the function once and it prints: 'Ramsey'
print_and_change_name();
// Call the function again, and it prints: 'Heather'
print_and_change_name();
?>