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What is php explode used to convert to an array?

青灯夜游
青灯夜游Original
2022-08-22 18:00:052127browse

In PHP, the explode() function is used to convert a string into an array. The explode() function can split a string based on the string separator, that is, split a string into several substrings based on the separator, and then combine these substrings into an array and return it; the syntax is "explode(separator, string , the number of array elements)".

What is php explode used to convert to an array?

The operating environment of this tutorial: windows7 system, PHP version 8.1, DELL G3 computer

In php, explode() Function is used to convert a string into an array.

explode() function uses one string to split another string and returns an array composed of strings.

In detail: The explode() function can split a string based on the string delimiter, that is, split a string into several substrings based on the delimiter, and then combine these substrings into an array and return it.

explode($delimiter, $string [, $limit])

The parameter description is as follows:

  • $delimiter: the splitting character used to split the string;
  • $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. The last element contains the remainder of $string;
    • If $limit is not empty and is negative, all elements except the last $limit elements are returned;
    • If $ If limit is 0, it will be treated as 1;
    • If $limit is empty, it means returning all array elements.

Note: The $delimiter parameter cannot be an empty string. Otherwise, an error will be reported.

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$str = &#39;hypertext language programming&#39;;
var_dump($str);
$arr=explode(" ",$str);
var_dump($arr);
$arr=explode("t",$str);
var_dump($arr);
$arr=explode("",$str);
var_dump($arr);
?>

What is php explode used to convert to an array?

$limit takes different values:

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$str = &#39;hypertext language programming&#39;;
var_dump($str);
$arr=explode(" ",$str);
var_dump($arr);
$arr=explode(" ",$str,2);
var_dump($arr);
$arr=explode(" ",$str,-1);
var_dump($arr);
?>

What is php explode used to convert to an array?

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