在PHP中比較嵌套的foreach變量沒有全局變量？

Question

我有多個foreach的解析數據，我需要相互比較。例如：

foreach ($xml_string->xpath('//location') as $character) { 

    $xml_name = $character->earthname; 

    $compare_remote = strtolower(preg_replace("/[^a-zA-Z0-9 ]/", "", $xml_name)); 

} 

foreach ($whatever as $key => $value) { 

foreach ($value as $pkey){ 

    $value_name = $pkey["spacename"]; 

    $compare_local = strtolower(preg_replace("/[^a-zA-Z0-9]/", '', $value_name)); 

} 
} 

我如何通過這兩組的foreach的所有值$compare_local比較$compare_remote與價值觀的循環，我很可能會使用levenshtein()，但在這個例子中任何的目的就行了。

Answer 1

foreach ($xml_string->xpath('//location') as $character) { 

     $xml_name = $character->earthname; 

     $compare_remote = strtolower(preg_replace("/[^a-zA-Z0-9 ]/", "", $xml_name)); 

     foreach ($whatever as $key => $value) { 

      foreach ($value as $pkey){ 

       $value_name = $pkey["spacename"]; 

       $compare_local = strtolower(preg_replace("/[^a-zA-Z0-9]/", '', $value_name)); 

       if($compare_remote==$compare_local) echo "match"; 
      } 
     } 

} 

Answer 2

不知道它是什麼你比較，你可以使用這兩個循環鍵/值查找以外的關聯數組。如果有一個公共密鑰，那麼您可以對兩個循環評估的相同值進行操作。理想情況下，我知道你想同時對兩者進行迭代，但這是一種可能導致一組評估數據的可能性。唯一的鍵被保留。

$compare[]; 

foreach ($xml_string->xpath('//location') as $character) { 

    $xml_name = $character->earthname; 

    $compare[strtolower(preg_replace("/[^a-zA-Z0-9 ]/", "", $xml_name))]; 

} 

foreach ($whatever as $key => $value) { 

foreach ($value as $pkey){ 

    $value_name = $pkey["spacename"]; 

    $compare[strtolower(preg_replace("/[^a-zA-Z0-9]/", '', $value_name))]; 

} 
}