How to convert string to array in php

Conversion method: 1. Using the explode() function, you can use one string to split another string and return an array composed of strings. The syntax format is "explode('separator', string) "; 2. Use str_split() function, syntax "str_split (string)".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Method 1: Use explode() Function

'; $arr = explode(',', $str); print_r($arr); $arr = explode(',', $str, 3); print_r($arr); $arr = explode(',', $str, -2); print_r($arr); $arr = explode(',', $str, 0); print_r($arr); ?>

Rendering:

Description:

explode() function can be based on string delimiter Split a string, that is, it splits a string into several substrings based on the delimiter, and then combines these substrings into an array and returns it. The syntax format is as follows:

explode(separator,string,limit)

Parameters

• delimiter: delimiter character used to split strings;

• string: The string that needs to be split;

• limit: Optional parameter, which can be empty, specifies the number of array elements to be returned;

  • If limit is not empty and is a positive number, the returned array contains at most limit elements, and the last element contains the remaining part of string;

  • If limit is not empty and If it is a negative number, all elements except the last limit elements will be returned;

  • If limit is 0, it will be treated as 1;

  • If limit is empty, it means returning all array elements.

If delimiter is an empty string"", the program will prompt a Warning, and the explode() function will return FALSE; if delimiter The contained value is not found in string and a negative limit is used, an empty array is returned, otherwise an array containing a single element of string is returned.

Method 2: Use str_split() function

'; $arr = str_split($str); print_r($arr); ?>

Description:

str_split() function separates characters Split the string into an array.

Syntax

str_split(string,length)

Recommended study: "PHP Video Tutorial"

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