Regular expressions commonly used in web development

PHP Common Expressions Usage

1. Matching positive integers:/^[1-9]\d*$/

2. Match non-negative integers (positive integer +0):/^\d+$/

3. Match Chinese:/^[\x{4e00}-\x{9fa5}]+$/u

4. Match email:/^\w+ ([-+.] \w+) *@\w+ ([-.] \w+) *\.\w+ ([-.] \w+) */

5. Matching URL URL: (((F|HT) {1} (TP|TPS)://) [[Email protected]:%_\+.~#?&//=]+]

6. Match letter start, 5-16 characters, alphanumeric underline:/^[a-za-z][a-za-z0-9_]{4,15}$/

7. Match numbers, letters, underscores, Chinese:/^[\x{4e00}-\x{9fa5}a-za-z0-9_]+$/u

8. Matching China postcode:/^[1-9]\d{5}$/

9. Match IP address:/\b (?:(? : 25[0-5]|2[0-4][0-9]| [01]? [0-9] [0-9]?) \.) {3} (?: 25[0-5]|2[0-4][0-9]| [01]? [0-9] [0-9]?) \b/

10. Match the Chinese mainland identity card:/^[1-9]\d{5}[1-9]\d{3} ((0\d) | ( 1[0-2]) (([0|1|2]\d) |3[0-1]) \d{3} (\d|x| X) $/

Examples of PHP Regular validation string methods:

[PHP] View plaincopy
$STR = "Chinese ah";
$preg = "/^[\x{4e00}-\x{9fa5}]+$/u"; Match Chinese
if (Preg_match ($preg, $str, $arr)) {
$msg = ' Match succeeded! ‘;
}else{
$msg = ' Match failed! ‘;
}
Echo $msg;

JavaScript Common expression Usage

1. Matching positive integers:/^[0-9]*[1-9][0-9]*$/

2. Match non-negative integers (positive integer +0):/^\d+$/

3. Match Chinese:/^[\u4e00-\u9fa5]/

4. Match email:/^\w+ ([-+.] \w+) *@\w+ ([-.] \w+) *\.\w+ ([-.] \w+) */

5. Match URL url:/^ (f|ht) {1} (TP|TPS): \/\/([\w-]+\.) +[\w-]+ (\/[\w-./?%&=]*)?

6. Match letter start, 5-16 characters, alphanumeric underline:/^[a-za-z][a-za-z0-9_]{4,15}$/

7. Match numbers, letters, underscores, Chinese:/^[\u4e00-\u9fa5a-za-z0-9_]+$/

8. Matching China postcode:/^[1-9]\d{5}$/

9. Match IP address:/\b (?:(? : 25[0-5]|2[0-4][0-9]| [01]? [0-9] [0-9]?) \.) {3} (?: 25[0-5]|2[0-4][0-9]| [01]? [0-9] [0-9]?) \b/

10. Match the Chinese mainland identity card:/^[1-9]\d{5}[1-9]\d{3} ((0\d) | ( 1[0-2]) (([0|1|2]\d) |3[0-1]) \d{3} (\d|x| X) $/

Examples of JavaScript Regular validation string methods:

[JS] View plaincopy
var str = "[email protected]";
var preg =/^\w+ ([-+.] \w+) *@\w+ ([-.] \w+) *\.\w+ ([-.] \w+) */; Match Email
if (Preg.test (str)) {
var msg = "Match success";
}else{
var msg = "Match failed!" ";
}
Alert (msg);

Regular expressions commonly used in web development