Thinkphp Framework String Class explanation

A string will be encountered in the development of thinkphp, and this article will explain its related knowledge.

In the PHP development site, the use of the thinkphp framework can greatly improve our development efficiency, thinkphp framework not only the entire website skeleton has been structured, but also provides a very rich class library. The following is mainly about the string class that we use most in the thinkphp framework.

1. Generate UUID and GUID

UUID (); #{a67a8215-d4c0-e6e6-2dcb-9d6d180d8056}keygen (); #3a08fd59e58d4fce424659f12d5868d4

2. Check if the character is UTF8 encoded

IsUtf8 ($STR); #bool (True)

3, string interception, support for Chinese and other encodings, the default starting from 0 in the UTF-8 character set interception, and the last display ellipsis

Msubstr ($str, $start =0, $length, $charset = "Utf-8″, $suffix =true) $str: string to intercept $start=0: Start position, default starting from 0 $length: Intercept length $ charset= "Utf-8″: Character encoding, default utf-8$suffix=true: Whether the ellipsis is displayed after the truncated character, the default true is displayed, False is not displayed

4. Generate random strings of a certain length, default length 6 letters, numbers and Chinese mix, can be used to automatically generate passwords or verification code

Randstring ($len =6, $type = ", $addChars =") $len: Length, default 6-bit $type: String type, 0 letters, 1 digits, 2 uppercase letters or uppercase letters plus custom characters, 3 lowercase or lowercase letters with custom characters, 4 Chinese or Chinese plus custom characters $addchars: Extra characters

5. Generate a certain number of equal-length random numbers, and do not repeat

Buildcountrand ($number, $length =4, $mode =1) $number: quantity $len: Length, default 4-bit $type: String type, 0-letter, 1-digit, 2 capital letter or uppercase plus custom character, 3 lowercase or lowercase letters plus custom characters, 4 Chinese or Chinese plus custom characters

6, generate a random character, support batch generation

Buildformatrand ($format, $number =1) $format: Character format, #表示数字, * denotes letters and numbers, $ denotes letter #: number, default one

7, to obtain a certain range of equal-length random numbers, the number of bits is not 0, the length of the maximum value of the length

Randnumber ($min, $max) $min: Minimum $max: Maximum

8, the automatic conversion character set supports array conversion, the default is GBK turn Utf-8

Autocharset ($string, $from = ' GBK ', $to = ' utf-8′) $string: string $from: Character Set, default ' GBK ', $to: Character set, default: ' utf-8′

Before using these string class methods in the thinkphp controller, you need to first introduce ($string = new \org\util\string in ThinkPHP3.2). If you want to use it in a page, you must copy these functions to the public library common.php.

This article detailed the relevant knowledge of string, more relevant knowledge, please pay attention to the PHP Chinese web.