Instructions for using php explode() function and implode() function

The following describes the usage of explode and implode in php, ballet shoes, I hope it will be helpful to my friends!

Speaking of php,Function is very important. It is also something that PHP enthusiasts and friends who like PHP advanced must master. Friends who are learning PHP also know that arrays must also be mastered. It can be said that, Advanced php, that is, learning arrays in php. In arrays, we usually need to split string or something like that. We need to use explode and implode function. The following explains the explode in php. And the usage of implode, ballet shoes, I hope it will be helpful to my friends!
Usage of explode in PHP
(PHP 3, PHP 4, PHP 5) explode--use a string to split another character String description
array explode ( string separator, string string [, int limit] )
This function returns an array composed of strings. Each element is a substring of string. They are separated by string separators as boundary surfaces.

If the limit parameter is set, the returned array contains at least limit elements, and the last element will contain the remaining part of string.
If separator is an empty string (""), explode() will return FALSE.
If the value contained in separator cannot be found in string, explode() will return an array containing the two elements of string.
If the limit parameter is a negative number, all elements except the last limit elements are returned. This feature is new in PHP 5.1.0.

Due to historical reasons, although implode() can accept two types of parameter orders, explode() cannot. You must ensure that the separator parameter comes before the string parameter.

Note: The parameter limit was added in PHP 4.0.1.

Example 1.
explode() example

The code is as follows:

<?php 
// 示例 1 $pizza = "piece1 piece2 piece3 piece4 piece5 piece6"; 
$pieces = explode(" ", $pizza); 
echo $pieces[0]; // piece1 
echo $pieces[1]; // piece2 

// 示例 2 
$data = "foo:*:1023:1000::/home/foo:/bin/sh"; 
list($user, $pass, $uid, $gid, $gecos, $home, $shell) = explode(":", $data); 
echo $user; // foo 
echo $pass; // * 
?>

Example 2.
limit parameter example

The code is as follows:

<?php 
$str = &#39;one|two|three|four&#39;; // 正数的 
limit print_r(explode(&#39;|&#39;, $str, 2)); // 负数的 
limit print_r(explode(&#39;|&#39;, $str, -1)); 
?>

The above example will output: Array ([0] => one [1] => two|three|four ) Array ( [0] => one [1 ] => two [2] => three)
Note: When the function can be used safely for two objects.
PHP implode() function

Examplec381452db4ee8d7662bb21b76aed8580
Output:
Hello World! Beautiful Day!

Definition and usage The implode() function combines array elements into a string.
Syntax implode(separator,array)
Parameter description separator is optional. Specifies what is placed between array elements. The default is "" (empty string). Array must be 400 phone number. Arrays to be combined into strings. Note that the separator parameter is optional. However, for the sake of backward compatibility, it is recommended that you use two parameters.
Tips and text text: implode() can accept two types of parameter orders. But due to historical reasons, explode() is endless. You must ensure that the separator parameter comes before the string parameter.

PHP’s explode and implode

The code is as follows:

<?php 
$zongzi = "1|2|3|4|5|6"; 
$zongzi = explode("|",$zongzi); 
var_dump($zongzi); 
$zongzi = implode("|",$zongzi); 
echo $zongzi; 
?>

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