01c01-1.php

来自「介绍PHP5的给类型函数应用」· PHP 代码 · 共 29 行

<?php
// A function to detect zipcodes in a string.
function detect_zipcode($string) {
	// Use regex to look for zipcodes, return true or false
	return preg_match('/\b\d{5}(-\d{4})?\b/', $string);
}

// Try a few examples:
echo '<pre>';

// A true example:
if (detect_zipcode('Frederick, MD  21701-3883')) {
	echo "Test 1: true\n";
}
// Another true example:
if (detect_zipcode('The zipcode 26623 is the area in which I grew up.')) {
	echo "Test 2: true\n";
}
// A False example:
if (detect_zipcode('The Phone Number is 301-555-1212')) {
	echo "Test 3: true\n";
}
// Another false example:
if (detect_zipcode('426969-313109')) {
	echo "Test 4: true\n";
}

echo '</pre>';
?>