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

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);
$str = &#39;PHP中文网,PHP教程,https://www.php.cn/,explode()函数,字符串转数组&#39;;
echo &#39;<pre class="brush:php;toolbar:false">&#39;;
$arr = explode(&#39;,&#39;, $str);
print_r($arr);
$arr = explode(&#39;,&#39;, $str, 3);
print_r($arr);
$arr = explode(&#39;,&#39;, $str, -2);
print_r($arr);
$arr = explode(&#39;,&#39;, $str, 0);
print_r($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

<?php
$str=&#39;woxihuanphp&#39;;
echo &#39;<pre class="brush:php;toolbar:false">&#39;;
$arr = str_split($str);
print_r($arr);
?>

Description:

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

Syntax

str_split(string,length)

Parameters	Description
string	Required. Specifies the string to be split.
length	Optional. Specifies the length of each array element. The default is 1.

Recommended study: "PHP Video Tutorial"

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