Functions to add and delete cells in php array

This article mainly introduces the common functions of adding and deleting units in PHP arrays. Examples analyze the usage skills of array_push, array_pop, array_shift and array_unshift functions. Friends in need can refer to the following

Example analysis of this article Commonly used functions for adding and deleting units in PHP arrays.

The specific analysis is as follows:

<?php
header("Content-type:text/html;charset=utf-8");
$arr = array("a"=>"Horse","b"=>"Cat","c"=>"Dog");
array_push($arr,"hello","world");
//array_push将一个或多个单元压入到数组末尾
print_r($arr);
echo "<br />";

//array_pop()：删除数组的最后一个单元
array_pop($arr);
print_r($arr);
echo "<br />";

//array_shift()：删除数组的第一个单元
array_shift($arr);
print_r($arr);
echo "<br />";

//array_unshift()：在数组开头添加一个或多个单元
array_unshift($arr,"Horse");
print_r($arr);
?>

Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.

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