大众点评网坐标转换

为什么80%的码农都做不了架构师？>>>

function decode($poi) {$settings = array('digi'=> 16,'add'=> 10,'plus'=> 7,'cha'=> 36,'center'=> array('lat'=> 34.957995,'lng'=> 107.050781,'isDef'=> true));$i = -1;$h = 0;$b = "";$j = strlen($poi);$g = ord($poi{$j-1});$c = substr($poi, 0, $j-1);$j--;for($e=0; $e<$j; $e++) {$d = base_convert($c{$e}, $settings['cha'], 10)-$settings['add'];if ($d>=$settings['add']) {$d = $d- $settings['plus'];}$b .= base_convert($d, 10, $settings['cha']);if ($d>$h) {$i = $e;$h = $d;}}$a = intval(substr($b, 0, $i), $settings['digi']);$f = intval(substr($b, $i+1), $settings['digi']);$l = ($a+$f-intval($g))/2;$k = ($f-$l)/100000;$l /= 100000;$lat = $k;$lng = $l;return array($lng, $lat);}