Summary of php string segmentation functions

The basic syntax of the PHP function split () is

Array split (string $ pattern, string $ string [, int $ limit]).

Example

The code is as follows:	Copy code
<? Php List ($ user, $ pass, $ uid, $ gid, $ extra) = split (":", $ passwd_line, 5 ); ?>

Parsing dates that may be separated by diagonal lines, points, or horizontal lines:

Example 2

The code is as follows:	Copy code
<? Php // The delimiter can be a diagonal line, a dot, or a horizontal line. $ Date = "04/30/1973 "; List ($ month, $ day, $ year) = split ('[/.-]', $ date ); Echo "Month: $ month; Day: $ day; Year: $ year <br/> n "; ?>

Str_split () function

If the optional split_length parameter is specified, each element in the returned array is a character block with the length of split_length. Otherwise, each character block is a single character.

If split_length is less than 1, FALSE is returned. If the split_length parameter exceeds the length of the string, the entire string is returned as only one element of the array.

The code is as follows:	Copy code
<? Php $ Str = "Hello Friend "; $ Arr1 = str_split ($ str ); $ Arr2 = str_split ($ str, 3 ); Print_r ($ arr1 ); Print_r ($ arr2 ); ?>

The above routine will output:

The code is as follows:	Copy code
Array ( [0] => H [1] => e [2] => l [3] => l [4] => o [5] => [6] => F [7] => r [8] => I [9] => e [10] => n [11] => d ) Array ( [0] => El [1] => lo [2] => Fri [3] => end )

Chunk_split () function

String chunk_split (string $ body [, int $ chunklen [, string $ end])
It is very useful to use this function to split a string into small pieces. For example, convert the base64_encode () output to a string that complies with the RFC 2045 syntax. It inserts end after each chunklen (76 by default) character ("" by default). This function returns a new string without modifying the original string.
Example #1 chunk_split ()

The code is as follows:	Copy code
<? Php // Format $ data using RFC 2045 syntax $ New_string = chunk_split (base64_encode ($ data )); ?>

Explode-use one string to separate another string

Example #1 explode () Example

The code is as follows:	Copy code
<? Php // Example 1 $ Pizza = "piece1 piece2 piece3 piece4 piece5 piece6 "; $ Pieces = explode ("", $ pizza ); Echo $ pieces [0]; // piece1 Echo $ pieces [1]; // piece2 // Example 2 $ Data = "foo: *: 1023: 1000:/home/foo:/bin/sh "; List ($ user, $ pass, $ uid, $ gid, $ gecos, $ home, $ shell) = explode (":", $ data ); Echo $ user; // foo Echo $ pass ;//* ?>