三国纷争
获取结果并将其转换为数组，其中每个元素都是具有所有属性的项目。收集所有标题，然后使用这些标题作为列来构建表格 - 这样，即使某些行缺少其中一个属性，它仍然会正确显示。<?php$data = [ //[ 'Item' => 'Rohr 1' , 'attrib' => 'diameter' , 'value' => '16' ] ,[ 'Item' => 'Rohr 1' , 'attrib' => 'Fluid Code' , 'value' => 'FW' ], [ 'Item' => 'Rohr 1' , 'attrib' => 'From' , 'value' => '3' ] ,[ 'Item' => 'Rohr 1' , 'attrib' => 'To' , 'value' => '2' ] ,[ 'Item' => 'Rohr 1' , 'attrib' => 'Subcontractor' , 'value' => '1' ], [ 'Item' => 'Rohr 1' , 'attrib' => 'Paint' , 'value' => 'A3' ] ,[ 'Item' => 'Rohr 1' , 'attrib' => 'Insulation' , 'value' => 'HS' ] ,[ 'Item' => 'Rohr 2' , 'attrib' => 'diameter' , 'value' => '80' ] ,[ 'Item' => 'Rohr 2' , 'attrib' => 'Fluid Code' , 'value' => 'FW' ], [ 'Item' => 'Rohr 2' , 'attrib' => 'From' , 'value' => '1' ] ,[ 'Item' => 'Rohr 2' , 'attrib' => 'To' , 'value' => '3' ] ,[ 'Item' => 'Rohr 2' , 'attrib' => 'Subcontractor' , 'value' => '1' ] ,[ 'Item' => 'Rohr 2' , 'attrib' => 'Paint' , 'value' => 'A3' ] ,[ 'Item' => 'Rohr 2' , 'attrib' => 'Insulation' , 'value' => 'HS' ] ,]; $headers = ['item'];$result = [];foreach($data as $row) { if (!isset($result[$row['Item']])) { $result[$row['Item']] = ['item' => $row['Item']]; } $result[$row['Item']][$row['attrib']] = $row['value']; if (!in_array($row['attrib'], $headers)) { $headers[] = $row['attrib']; }}var_dump($headers);var_dump($result);$html = '<table><tr>';foreach ($headers as $header) { $html .= '<th>'.$header.'</th>';}$html .= '</tr>';foreach ($result as $row) { $html .= '<tr>'; foreach ($headers as $header) { $html .= '<td>'.($row[$header] ?? '-').'</td>'; } $html .= '</tr>';}$html .= '</table>';echo $html;$headers:array(8) { [0]=> string(4) "item" [1]=> string(10) "Fluid Code" [2]=> string(4) "From" [3]=> string(2) "To" [4]=> string(13) "Subcontractor" [5]=> string(5) "Paint" [6]=> string(10) "Insulation" [7]=> string(8) "diameter"}$result:array(2) { ["Rohr 1"]=> array(7) { ["item"]=> string(6) "Rohr 1" ["Fluid Code"]=> string(2) "FW" ["From"]=> string(1) "3" ["To"]=> string(1) "2" ["Subcontractor"]=> string(1) "1" ["Paint"]=> string(2) "A3" ["Insulation"]=> string(2) "HS" } ["Rohr 2"]=> array(8) { ["item"]=> string(6) "Rohr 2" ["diameter"]=> string(2) "80" ["Fluid Code"]=> string(2) "FW" ["From"]=> string(1) "1" ["To"]=> string(1) "3" ["Subcontractor"]=> string(1) "1" ["Paint"]=> string(2) "A3" ["Insulation"]=> string(2) "HS" }}构建的 HTML（您可以根据需要显示它，此时我假设为 html）：<table><tr><th>item</th><th>Fluid Code</th><th>From</th><th>To</th><th>Subcontractor</th><th>Paint</th><th>Insulation</th><th>diameter</th></tr><tr><td>Rohr 1</td><td>FW</td><td>3</td><td>2</td><td>1</td><td>A3</td><td>HS</td><td>-</td></tr><tr><td>Rohr 2</td><td>FW</td><td>1</td><td>3</td><td>1</td><td>A3</td><td>HS</td><td>80</td></tr></table>它是这样的： https: //jsfiddle.net/z0k5teqv/。请注意，Rohhr 1 的直径为“-”，已从 $data 中注释掉以显示这一点。
元芳怎么了
在显示结果之前，您需要连接到数据库并执行查询。连接yoiu可以使用PDO、MySQLi。要显示 SQL 结果，您可以针对您的情况使用循环示例：<?php// make connect to database$db_host = 'localhost';// This MySQL host, for XAMPP/LAMPP/etc. that will be 'localhost'$db_user = 'my_user';// This is user for your DB, you authorize in PHPMyAdmin with this user$db_password = 'qwerty';// This is password for your DB, you authorize in PHPMyAdmin with this password$db_name = 'item_attrib_values';// This is your DB name$db = new mysqli($db_host, $db_user, $db_password, $db_name);if ($db->connect_errno) { // if you script can't connect to database will be abort execution and displayed message 'Connection failed' exit('Connection failed');}// before execute query you need make "prepare", this will be analyze SQL query// instead of data you should use `?` this is placeholder, MySQLi understand what instead of this symbol should be real data// Important notice: don't wrap placeholder `"?"`, `'?'` - this is string data but `?` - placeholder$stmt = $db->prepare("SELECT i.name, ia.name, iav.value FROM `item_attrib_values` iavJOIN item_atributs ia ON iav.ia_ID = ia.IDJOIN items i ON iav.i_ID = i.IDJOIN item_class ic ON ic.ID = i.ic_IDWHERE ic.ID = ?");if(!$stmt) { // if you script doesn't make "prepare" for SQL query will be abort script execution and displayed message 'Preparation failed' exit('Preparation failed');}// You completed preparation, but now MySQLi doesn't know about data for execute// Let's get data for MySQLiif(!$stmt->bind_param("i", 1)){ // binding data for MySQLi, first argument is type ("i" that's integer) and second argument is data // if bind not executed You abort script and get error message exit('Binding failed');}$results = null;$row = null;// That's all, you can run executionif(!$stmt->execute();) { // Run execution, if execution failed $result will be `false` exit('Execution failed');} ele { // If execution success you can get results $results = $stmt->get_result();}$stmt->close();// Closing statement, that's good practice// OK, you have $result, but now you can't get data, you need convert this to array$resultif(!is_null($result)) { // check, if you can results echo('<table>'); while ($row = $result->fetch_all()) { // this loop will be execute while you have results // print "rows" echo('<tr>'); foreach ($row as &$value) { // print "columns" with your data echo('<td>'.$value.'</td>'); } echo('</tr>'); } echo('</table>');}?>