Online PHP editor | rfc for hsA2o

@ 2014-12-24T15:10:20Z

<?php
error_reporting(-1);

$array = array(array('id' => 1, 'fid' => 2), array('id' => 2, 'fid' => 2));

class Map
{
    public static function byProperty(array $array, $property)
    {
        $map = array();
        foreach ($array as $record) {
            $propValue = self::_getPropertyValue($record, $property);
            $map[$propValue][] = $record;
        }
        return $map;
    }

    public static function byMultiProperty(array $array, array $properties)
    {
        $map = array();
        $lastProperty = end($property);
        foreach($array as $record) {
            $pointer = $map;
            foreach($properties as $property) {
                $propValue = self::_getPropertyValue($record, $property);
                if(!isset($pointer[$propValue])) {
                    $pointer[$propValue] = array();
                }
                $pointer = &$pointer[$propValue];
                
                if($property === $lastProperty) {
                    $pointer[] = $record;
                }
                
            }
        }
        return $map;
    }

    /**
     * @param mixed $record
     * @param string $property
     * @return mixed
     */
    private static function _getPropertyValue($record, $property)
    {
        if (is_array($record)) {
            return isset($record[$property]) ? $record[$property] : null;
        }
        if (is_object($record)) {
            return isset($record->$property) ? $record->$property : null;
        }
        throw new InvalidArgumentException(sprintf('Unsupport record type: %s',
            gettype($record)));
    }
}


var_dump(Map::byMultiProperty($array, array('fid', 'id')));

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught TypeError: end(): Argument #1 ($array) must be of type array, null given in /in/hsA2o:21 Stack trace: #0 /in/hsA2o(21): end(NULL) #1 /in/hsA2o(59): Map::byMultiProperty(Array, Array) #2 {main} thrown in /in/hsA2o on line 21
Process exited with code 255.

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