for循环中的PHP循环

Question

我想venue_与venueName. 但似乎它只显示最后一个venue_结果。知道我的代码有什么问题吗？$venueLength = 6;for ($i = 0; $i < $venueLength; $i++) {  $linkageArray = array();  $mainArray = array ("venueName" => $venueArray[$i]['venueName']);  for ($j = 0; $j < $venueLength; $j++) {    $secondArray = array ( "venue_".$j => (in_array($venueArray[$j]['venueID'], $linkageArray) ? 'X' : ''));  }  $res[] = array_merge($mainArray, $secondArray); }   header("Content-type: application/json");$result = json_encode($res);echo $result;结果[  {    venueName: "Data A",    venue_5: ""  },  {    venueName: "Data A3",    venue_5: ""  },  {  ........]我想要的结果[  {    venueName: "Data A",    venue_0: "",    venue_1: "",    venue_2: "",    venue_3: "",    venue_4: "",    venue_5: ""  },  {    venueName: "Data A3",    venue_0: "",    venue_1: "",    venue_2: "",    venue_3: "",    venue_4: "",    venue_5: ""  },  ........]

Answer 1

您只需继续重置$secondArray值

$secondArray = array ( "venue_".$j => (in_array($venueArray[$j]['venueID'], $linkageArray) ? 'X' : ''));

而是在循环外重置数组并为每个循环添加一个新值......

  $secondArray = [];

  for ($j = 0; $j < $venueLength; $j++) {

      $secondArray[ "venue_".$j ] = (in_array($venueArray[$j]['venueID'], $linkageArray) ? 'X' : ''));

  }

或者直接添加到$mainArray

  for ($j = 0; $j < $venueLength; $j++) {

      $mainArray[ "venue_".$j ] = (in_array($venueArray[$j]['venueID'], $linkageArray) ? 'X' : ''));

  }

你不需要array_merge().