PHP partition function Preg_split () function, usage, example, parameter description

PHP partition function Preg_split () function, usage, example, parameter description

Preg_split

Definition and usage

The Preg_split () function splits a string with a regular expression.

Related functions: Spliti (), Str_split (), explode (), implode (), Chunk_split ()

Grammar

Preg_split (Pattern,subject,limit,flags)

Parameters	Description
Pattern	Regular expressions
Subject	String to be split
Limit	Limit the number of sub-strings to be split to only a limit
Flags	Preg_split_no_empty If this tag is set, Preg_split () will return to the non-empty part after the separation. Preg_split_delim_capture If this tag is set, the parentheses expression in the pattern used for the separation will be captured and returned. Preg_split_offset_capture If this tag is set, the string offset will be appended to each occurrence of the match returned. Note: This will change each element in the returned array so that each element becomes a delimited substring of the No. 0 element, and the 1th element is an array of the offset of the substring in subject.

Example

Preg_split () Gets the part of the search string

Output:

Array (    [0] = hypertext    [1] = Language    [2] = programming)

Separates a string into the character that makes up it

Output:

Array (    [0] = s    [1] = =    [2] = = R    [3] = i    [4] = n    [5] = g)

Separates a string and gets the offset of each part

Output:

Array ([    0] = = Array        (            [0] = = Hypertext            [1] = 0        )    [1] = = Array        (            [0] = = Language            [1] = [    2] = = Array        (            [0] = programming            [1] =        +))

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