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How to use list method in PHP

墨辰丷
墨辰丷Original
2018-05-30 09:41:331497browse

This article mainly introduces the usage of the list method in PHP, and analyzes the relevant operating skills and precautions for assigning array values ​​​​to variables using the list method in the form of examples. Friends in need can refer to the following

for details As follows:

<?php
function small_numbers()
{
  return array (0, 1, 2);
}
list ($zero, $one, $two) = small_numbers();
var_dump($zero);
var_dump($one);
var_dump($two);
?>

Output:

int(0)
int(1)
int(2)

Change it

<?php
function small_numbers()
{
  return array (0, 1);
}
list ($zero, $one, $two) = small_numbers();
var_dump($zero);
var_dump($one);
var_dump($two);
?>

Output:

Notice: Undefined offset: 2 in D:\xampp\htdocs\t\test.php on line 6
int(0)
int(1)
NULL

Change it again

<?php
function small_numbers()
{
  return array (0, 1 ,2 ,3);
}
list ($zero, $one, $two) = small_numbers();
var_dump($zero);
var_dump($one);
var_dump($two);
?>

Output:

int(0)
int(1)
int(2)

Change it again and learn by drawing inferences

<?php
function small_numbers()
{
  return array (0, 1 , array(&#39;2&#39;));
}
list ($zero, $one, $two) = small_numbers();
var_dump($zero);
var_dump($one);
var_dump($two);
?>

Output:

int(0)
int(1)
array(1) {
[0]=>
string(1) "2"
}

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


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