How to delete specified key name in array in php

In PHP, you can use the unset() function to delete the specified key name in the array, the syntax format is "unset(array name[key name]);". The unset() function can destroy a given variable, and its behavior will vary depending on the type of variable you want to destroy.

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

php deletes the array specified key name

In PHP, you can use the unset() function to delete the specified key name in the array. The syntax format is as follows:

unset(数组名称[键名]);

Example:

<?php
$data=array ("0"=>1,"1"=>1,"2"=>1);
unset($data[0]);	
print_r($data);  
?>

Output:

Array ( [1] => 1 [2] => 1 )

PHP unset() function

unset() function is used to destroy the given variable.

Syntax

void unset ( mixed $var [, mixed $... ] )

Parameter description:

• $var: variable to be destroyed.

Return value: No return value.

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