PHP include() Statement
Description
The include() statement is used to include a php file in another file. This way you can write a piece of code in a php file and can use it to multiple files through include() statement.
If a.php is a php script calling b.php with include() statement, and does not find b.php, a.php executes with a warning, excluding the part of the code written within b.php.
Syntax:
include('name of the php file with path');
Example:
File my_include.php:
<?php
$sports1 = "football";
$sports2 = "cricket";
?>
File myfile.php, which includes my_include.php :
<?php
include('my_include.php');
echo "I prefer ". $sports1 ."
than ". $sports2;
?>
Output:
I prefer football than cricket
View the example in the browser
If the file within require statement is not available:
For example, if you write my-include.php (which is not available),like this:
<?php
include('myfile_include.php');
echo "I prefer ". $sports1 ." than ". $sports2;
?>
View the example of php include statement where included file is not present
You can see that it fails to meet the purpose of including the file myfile_include.php, but the script does not stop executing.
require() Statement
require() is identical to include() except upon failure. On failure it produce a fatal E_ERROR level error.
See also
Previous: return statement
Next: require_once, include_once
PHP: Tips of the Day
How to Sort Multi-dimensional Array by Value?
Try a usort, If you are still on PHP 5.2 or earlier, you'll have to define a sorting function first:
Example:
function sortByOrder($a, $b) { return $a['order'] - $b['order']; } usort($myArray, 'sortByOrder');
Starting in PHP 5.3, you can use an anonymous function:
usort($myArray, function($a, $b) { return $a['order'] - $b['order']; });
And finally with PHP 7 you can use the spaceship operator:
usort($myArray, function($a, $b) { return $a['order'] <=> $b['order']; });
To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first is zero - best explained below. You can also use this for sorting on sub-elements.
usort($myArray, function($a, $b) { $retval = $a['order'] <=> $b['order']; if ($retval == 0) { $retval = $a['suborder'] <=> $b['suborder']; if ($retval == 0) { $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder']; } } return $retval; });
If you need to retain key associations, use uasort() - see comparison of array sorting functions in the manual
Ref : https://bit.ly/3i77vCC
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