php 數組比較取值,該怎麼解決

php 數組比較取值
{ [0]=> string(9) "1_29" [1]=> string(8) "2_334" [2]=> string(4) "1" [3]=> string(4) "2"
[4]=> string(9) "1_30" [5]=> string(8) "5_334" [6]=> string(4) "6" [7]=> string(4) "10" }

用‘-'分開的前面的值在資料裡跟沒有'-'的值相同就不取這條資料
比如1_29因為資料裡有1跟[2]=> string(4) "1"相同就不取
最後結果只有有‘-’且沒有重複的
｛[5]=> string(8) "5_334" ｝


------解決方案--------------------

$a=array("1_29","2_334","1","2","1_30","5_334","6","10");
var_dump($a);

$keys=array();
$result=array();
foreach($a as $val){
if(is_numeric($val))
$keys[]=$val;
}
foreach($a as $val){
if(!is_numeric($val)){
$tmp=explode("_",$val);
if(count($tmp)==2&&!in_array($tmp[0],$keys))
$result[]=$val;
}
}
var_dump($result);
?>

輸出：

array(8) {
[0]=>
string(4) "1_29"
[1]=>
string(5) "2_334"
[2]=>
string(1) "1"
[3]=>
string(1) "2"
[4]=>
string(4) "1_30"
[5]=>
string(5) "5_334"
[6]=>
string(1) "6"
[7]=>
string(2) "10"
}
array(1) {
[0]=>
string(5) "5_334"
}

------解決方案--------------------
很土的代碼,不過結果是你要的.

PHP code

$Array = array ('1_29', '2_334', '1', '2', '1_30', '5_334', '6', '10' );$ReferArray = array ();$FixArray = array ();$MyArray = array ();foreach ( $Array as $Value ) {    if (strpos ( $Value, '_' ) == false) {        $ReferArray [] = $Value;    } else {        $FixArray [] = substr ( $Value, 0, 1 );        $MyArray [] = $Value;    }}$FixArray = array_diff ( $FixArray, $ReferArray );foreach ( $FixArray as $Key => $Value ) {    echo $MyArray [$Key];}
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