Your Array Helper

ArrayHelper.php

<?php

class ArrayHelper
{
    public static function except($attributes, $hidden)
    {
        return array_diff_key($attributes, array_flip((array) $hidden));
    }

    public static function isEmpty($array)
    {
        if(self::depth($array) > 0)
        {
            $empty = true;

            foreach ($array as $key => $value) $empty = (empty($value) or is_null($value));

            return $empty;
        }

        return empty($array);
    }

    public static function only($attributes, $hidden)
    {
        return array_intersect_key($attributes, array_flip((array) $hidden));
    }

    public static function replaceKey($attributes, $regex, $replacement = '')
    {
        $array = array();

        foreach ($attributes as $key => $value) $array[str_replace($regex, $replacement, $key)] = $value;

        return $array;
    }

    public static function massReplaceValue($attributes, $search, $replacement)
    {
        $array = array();

        foreach ($attributes as $value) $array[] = str_replace($search, $replacement, $value);

        return $array;
    }

    public static function depth($array)
    {
        $maxIndentation = 1;
        $arrayStr       = print_r($array, true);
        $lines          = explode("\n", $arrayStr);

        foreach ($lines as $line) {
            $indentation = (strlen($line) - strlen(ltrim($line))) / 4;

            if ($indentation > $maxIndentation) $maxIndentation = $indentation;
        }

        return ceil(($maxIndentation - 1) / 2) + 1;
    }

    public static function flip($array)
    {
        $data = array();

        for ($i = 0; $i < count(reset($array)); $i++) {
            $data[$i] = array();

            foreach ($array as $key => $value) $data[$i][$key] = $value[$i];
        }

        return $data;
    }

    public static function onlyFalidFiles($files) {
        $array = array();

        foreach ($files as $key => $value) {
            if (! $value['error']) $array[$key] = $value;
        }

        return $array;
    }
}