PHP custom two-dimensional array sorting function array
This time I will bring you php custom two-dimensional array sorting function array, what are the precautions for php custom two-dimensional array sorting function array, the following is a practical case, let's take a look.
This article mainly introduces the usage of php custom two-dimensional array sorting function array_orderby, combined with examples to analyze the related traversal, determination, sorting and other operations of php for sorting two-dimensional arrays Tips, friends in need can refer to
This article describes the usage of PHP's custom two-dimensional array sorting function array_orderby. Share it with everyone for your reference, the details are as follows:
<?php
/**
I came up with an easy way to sort database-style results. This does what example 3 does, except it takes care of creating those intermediate arrays for you before passing control on to array_multisort().
*/
function array_orderby()
{
$args = func_get_args();
$data = array_shift($args);
foreach ($args as $n => $field) {
if (is_string($field)) {
$tmp = array();
foreach ($data as $key => $row)
$tmp[$key] = $row[$field];
$args[$n] = $tmp;
}
}
$args[] = &$data;
call_user_func_array('array_multisort', $args);
return array_pop($args);
}
/*
The sorted array is now in the return value of the function instead of being passed by reference.
*/
$data[] = array('volume' => 67, 'edition' => 2);
$data[] = array('volume' => 86, 'edition' => 1);
$data[] = array('volume' => 85, 'edition' => 6);
$data[] = array('volume' => 98, 'edition' => 2);
$data[] = array('volume' => 86, 'edition' => 6);
$data[] = array('volume' => 67, 'edition' => 7);
// Pass the array, followed by the column names and sort flags
$sorted = array_orderby($data, 'volume', SORT_DESC, 'edition', SORT_ASC);
print_r($sorted)
?>Running results:
Array ( [0] => Array ( [volume] => 98 [edition] => 2 ) [1] => Array ( [volume] => 86 [edition] => 1 ) [2] => Array ( [volume] => 86 [edition] => 6 ) [3] => Array ( [volume] => 85 [edition] => 6 ) [4] => Array ( [volume] => 67 [edition] => 2 ) [5] => Array ( [volume] => 67 [edition] => 7 ) )
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