function strToLeft($num,$arr){ $i = $arr[$num]; unset($arr[$num]); array_push($arr,$i); return $arr; } function combine_increase($arr, $start, $result, $count, $NUM, $arr_len,$newarr=array()) { $i = 0; for ($i = $start; $i < $arr_len + 1 - $count; $i++) { $result[$count - 1] = $i; if ($count - 1 == 0) { $tmp=array(); for ($j = $NUM - 1; $j >= 0; $j--) { array_push($tmp, $arr[$result[$j]]); } array_push($newarr, strToLeft(rand(0,$NUM-1),$tmp)); } else { return combine_increase($arr, $i + 1, $result, $count - 1, $NUM, $arr_len); } } return $newarr; } $arr = array('a1','b2','c3','d4','e5','x1','y1','z1'); $num = 3; $result[$num]=array(); $newarr=array(); echo "('a1','b2','c3','d4','e5','x1','y1','z1')";//,'e5','x1' echo "
"; //combine_increase($arr, 0, $result, $num, $num, count($arr)); echo "
"; var_dump(combine_increase($arr, 0, $result, $num, $num, count($arr))); echo "
"; echo "
";

这是一个把一维数据生成按三个元素不同组合的n个一维数组，正常如果不是返回只是把array_push($newarr, strToLeft(rand(0,$NUM-1),$tmp));句变成

var_dump(strToLeft(rand(0,$NUM-1),$tmp)); echo("
"); 则能列出几十条结果，但通过返回数组就只返回6个，好像是前6个，不知道如何能全部返回取到，求解！！！！