Multi-field Sorting of PHP Arrays

This article was originally published on 2022-07-04 and migrated here from an old blog. Compiled by: Hermes

During development, it is often necessary to sort multi-dimensional arrays according to multiple fields. This article introduces a practical method for multi-field sorting.

📝 Code Directly

CodeBlock Loading...

🎯 Calling Method

CodeBlock Loading...

📊 Sorting Result

CodeBlock Loading...

💡 Explanation

If no sort method is specified, the default is descending (DESC)
Supports asc (ascending) and desc (descending)
Uses array_multisort() to implement multi-field sorting

Compiled by: Hermes

This article was originally published on 2022-07-04 and migrated here from an old blog. Compiled by: Hermes

Multi-field Sorting of PHP Arrays

During development, it is often necessary to sort multi-dimensional arrays according to multiple fields. This article introduces a practical method for multi-field sorting.

📝 Code Directly

<?php
if (!function_exists('sortByTwoField')) {

    /**
     * Sort array by two fields
     * @param array $data Input array
     * @param string $field1 Primary field + space + sort method Example: field1 desc Default DESC
     * @param string $field2 Secondary field + space + sort method Example: field2 asc Default DESC
     * @return array|string Sorted array
     */
    function sortByTwoField($data, $field1 = '', $field2 = '')
    {
        if(!is_array($data)) return 'Please pass an array';
        if (count($data) <= 0 || empty($field1) || empty($field2)) return $data;
        
        $sort1 = SORT_DESC;
        $sort2 = SORT_DESC;
        
        $f1 = explode(" ", $field1);
        $field1 = $f1[0];
        if (isset($f1[1])) {
            if (strtolower($f1[1]) == 'asc') $sort1 = SORT_ASC;
        }
        
        $f2 = explode(" ", $field2);
        $field2 = $f2[0];
        if (isset($f2[1])) {
            if (strtolower($f2[1]) == 'asc') $sort2 = SORT_ASC;
        }
        
        foreach ($data as $key => $value) {
            if (!isset($value[$field1])) return ["Field '{$field1}' does not exist"];
            if (!isset($value[$field2])) return ["Field '{$field2}' does not exist"];
            $price[$key] = $value[$field1];
            $num[$key] = $value[$field2];
        }
        
        array_multisort($price, $sort1, $num, $sort2, $data);
        return $data;
    }
}
?>

CodeBlock Loading...

🎯 Calling Method

<?php
$phb = array(
    ['id'=>1, 'daka_day60'=>'1', 'likes'=>'8'],
    ['id'=>2, 'daka_day60'=>'8', 'likes'=>'1'],
    ['id'=>3, 'daka_day60'=>'5', 'likes'=>'2'],
    ['id'=>4, 'daka_day60'=>'5', 'likes'=>'7'],
    ['id'=>5, 'daka_day60'=>'5', 'likes'=>'5'],
);

// Sort by daka_day60 descending, and by likes ascending when equal
$phb = sortByTwoField($phb, 'daka_day60', 'likes asc');

print_r($phb);
?>

CodeBlock Loading...

📊 Sorting Result

[
    {"id": 2, "daka_day60": "8", "likes": "1"},
    {"id": 3, "daka_day60": "5", "likes": "2"},
    {"id": 5, "daka_day60": "5", "likes": "5"},
    {"id": 4, "daka_day60": "5", "likes": "7"},
    {"id": 1, "daka_day60": "1", "likes": "8"}
]

CodeBlock Loading...

💡 Explanation

If no sort method is specified, the default is descending (DESC)
Supports asc (ascending) and desc (descending)
Uses array_multisort() to implement multi-field sorting

Compiled by: Hermes

Multi-field Sorting of PHP Arrays

Multi-field Sorting of PHP Arrays

Multi-field Sorting of PHP Arrays

📝 Code Directly

🎯 Calling Method

📊 Sorting Result

💡 Explanation

Search

Multi-field Sorting of PHP Arrays

Multi-field Sorting of PHP Arrays

Multi-field Sorting of PHP Arrays

📝 Code Directly

🎯 Calling Method

📊 Sorting Result

💡 Explanation