在PHP中創建任意行數的HTML表格

Question

我對PHP知之甚少，所以決定創建一個基於Web的工具來生成Red Hat kickstart文件將是一個很好的項目。除此之外，該工具將解析CSV文件並生成包含從中獲取的數據的表格。輸入文件格式如下：

 
host1,10.153.196.248,255.255.255.0,10.153.196.1,00:50:56:ac:69:cb 
,10.153.157.113,255.255.255.128,10.153.157.1, 
,10.153.157.241,255.255.255.128,10.153.157.129, 
,/home,10,,, 
,swap,10,,, 
,/opt,60,,, 
,/data,30,,, 
,,,,, 
host2,10.153.155.124,255.255.255.128,10.153.155.1,00:50:56:ac:69:ce 
,10.153.157.114,255.255.255.128,10.153.157.1, 
,10.153.157.242,255.255.255.128,10.153.157.129, 
,/home,10,,, 
,swap,10,,, 
,/opt,60,,, 
,/data,30,,, 
,,,,, 

每段文本都代表一個服務器的信息。字段說明如下：

 
hostname,eth0 IP, eth0 netmask, eth0 gateway, eth4 MAC 
null,eth1 IP, eth1 netmask, eth1 gateway, null 
blank,eth2 IP, eth2 netmask, eth2 gateway, null 
null,partition name, partition size in GB, null, null 
null,partition name, partition size in GB, null, null 
null,partition name, partition size in GB, null, null 
null,partition name, partition size in GB, null, null 
null,null,null,null,null 

此刻，我可以分析它，併產生與輸入文件是在表中的行每行的表。產生

function processFile($workFile) { 

    if (file_exists($workFile)) { 
     print '<table>'; 
     $fh = fopen("$workFile", 'rb'); 
     if ($fh) { 
      for ($line = fgets($fh); !feof($fh); $line = fgets($fh)) { 
       $line = trim($line); 
       $info = explode(',', $line); 
       print '<tr><td>' . $info[0] . '</td><td>' . $info[1] . '</td><td>' . $info[2] . '</td><td>' . $info[3] . '</td></tr>'; 
      } 
     } else { 
      print "Failed to open $workFile"; 
     } 
     print '</table>'; 
    } else { 
     print "File $workFile does not exist"; 
    } 

} 

：

 
host1  eth0 IP  eth0 netmask  eth0 gateway 
      eth1 IP  eth1 netmask  eth1 gateway 
      eth2 IP  eth2 netmask  eth2 gateway 
      partition 1 partition 1 size 
      partition 2 partition 2 size 
      partition 3 partition 3 size 
      partition 4 partition 4 size 
host2  eth0 IP  eth0 netmask  eth0 gateway 
      eth1 IP  eth1 netmask  eth1 gateway 
      eth2 IP  eth2 netmask  eth2 gateway 
      partition 1 partition 1 size 
      partition 2 partition 2 size 
      partition 3 partition 3 size 
      partition 4 partition 4 size 

這是一個開始處理這個功能。但是，並不是每個服務器都有四個分區。有些會有更多，有些會少一兩個。事先並不知道這些信息會阻礙我想要做的事情，那就是在每個服務器的分區信息下面添加一行，並且可能會將每個服務器分解到自己的表中。沿此線的東西：

 
host1  eth0 IP   eth0 netmask  eth0 gateway 
      eth1 IP   eth1 netmask  eth1 gateway 
      eth2 IP   eth2 netmask  eth2 gateway 
      partition 1  partition 1 size 
      partition 2  partition 2 size 
      partition 3  partition 3 size 
      partition 4  partition 4 size 
      partition 5  partition 5 size 
      partition 6  partition 6 size 
      How many disks? [Text Field}  

host2  eth0 IP   eth0 netmask  eth0 gateway 
      eth1 IP   eth1 netmask  eth1 gateway 
      eth2 IP   eth2 netmask  eth2 gateway 
      partition 1  partition 1 size 
      partition 2  partition 2 size 
      partition 3  partition 3 size 
      partition 4  partition 4 size 
      How many disks? [Text Field} 

我當時的想法是，我將不得不在CSV文件中的字段表明該行包含分區信息。這似乎是最簡單的方法。我想知道是否有另一種方法可以使用，但不需要改變輸入文件的格式。

我還必須弄清楚如何使用包含所有空字段的行作爲分隔符。

任何想法如何我可以接近這將不勝感激。

Answer 1

echo('<table>'); 
$i = 0; 
while($data = fgetcsv($fh)) { 
    echo('<tr>'); 
    $cellTag = 'td'; 
    if($i == 0) { 
     $cellTag = 'th'; 
    } 
    $i++; 
    foreach($data as $cell) { 
     echo('<'.$cellTag.'>'.$cell.'</'.$cellTag.'>'); 
    } 
    echo('</tr>'); 
} 
echo('</table>'); 

試試看。勒米知道它是否第一次不起作用。我會測試它，但我沒有CSV文件。

Answer 2

如你解析應該匹配特定格式的數據，應當在定期性質，允許你使用正則表達式來嚴格一致的你想要的輸入（並扔掉你不這樣做）：

$rows = explode("\n", $input); 

// @link http://stackoverflow.com/questions/106179/regular-expression-to-match-hostname-or-ip-address 
$regIp = "(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])"; 
$regHost = "(([a-zA-Z]|[a-zA-Z][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z]|[A-Za-z][A-Za-z0-9\-]*[A-Za-z0-9])"; 

$hosts = array(); 
foreach ($rows as $row) { 
    $matches = null; 
    if (preg_match("/(?<host>$regHost),(?<ip>$regIp),(?<netmask>$regIp),(?<gateway>$regIp),(?<mac>.*)/", $row, $matches)) { 
    $host = $matches['host']; 
    $hosts[$host]['name'] = $matches['host']; 
    $hosts[$host]['mac'] = $matches['mac']; 
    $hosts[$host]['eth'][] = array(
     'ip'  => $matches['ip'], 
     'netmask' => $matches['netmask'], 
     'gateway' => $matches['gateway'], 
    ); 
    } else if (preg_match("/,(?<ip>$regIp),(?<netmask>$regIp),(?<gateway>$regIp),/", $row, $matches)) { 
    $hosts[$host]['eth'][] = array(
     'ip'  => $matches['ip'], 
     'netmask' => $matches['netmask'], 
     'gateway' => $matches['gateway'], 
    ); 
    } else if (preg_match("/,(?<name>.+),(?<size>\d+),,,/", $row, $matches)) { 
    $hosts[$host]['partition'][] = array(
     'name' => $matches['name'], 
     'size' => $matches['size'], 
    ); 
    } else if (preg_match("/,,,,,/", $row)) { 
    // we already partition output array with value of `$host` variable. 
    echo "Found terminating row\n"; 
    } else { 
    echo "Unrecognised data on row: $row\n"; 
    } 
} 

var_export($hosts); 

由於我們正在處理CSV文件，因此可以在循環內使用$fields = str_getcsv($row)來獲取包含每個字段的數組。然後需要計算該陣列有多少個字段，有多少個字段爲空，並驗證每個字段包含的內容。

直接在每個CSV行的字符串表示形式上使用正則表達式可以使我們在單個表達式中嚴格匹配上述所有內容。每個正則表達式的(?<var>...)部分被命名爲matches。使用由OP，上述腳本輸出所提供的輸入：

Found terminating row 
Found terminating row 
array (
    'host1' => 
    array (
    'name' => 'host1', 
    'mac' => '00:50:56:ac:69:cb', 
    'eth' => 
    array (
     0 => 
     array (
     'ip' => '10.153.196.248', 
     'netmask' => '255.255.255.0', 
     'gateway' => '10.153.196.1', 
    ), 
     1 => 
     array (
     'ip' => '10.153.157.113', 
     'netmask' => '255.255.255.128', 
     'gateway' => '10.153.157.1', 
    ), 
     2 => 
     array (
     'ip' => '10.153.157.241', 
     'netmask' => '255.255.255.128', 
     'gateway' => '10.153.157.129', 
    ), 
    ), 
    'partition' => 
    array (
     0 => 
     array (
     'name' => '/home', 
     'size' => '10', 
    ), 
     1 => 
     array (
     'name' => 'swap', 
     'size' => '10', 
    ), 
     2 => 
     array (
     'name' => '/opt', 
     'size' => '60', 
    ), 
     3 => 
     array (
     'name' => '/data', 
     'size' => '30', 
    ), 
    ), 
), 
    'host2' => 
    array (
    'name' => 'host2', 
    'mac' => '00:50:56:ac:69:ce', 
    'eth' => 
    array (
     0 => 
     array (
     'ip' => '10.153.155.124', 
     'netmask' => '255.255.255.128', 
     'gateway' => '10.153.155.1', 
    ), 
     1 => 
     array (
     'ip' => '10.153.157.114', 
     'netmask' => '255.255.255.128', 
     'gateway' => '10.153.157.1', 
    ), 
     2 => 
     array (
     'ip' => '10.153.157.242', 
     'netmask' => '255.255.255.128', 
     'gateway' => '10.153.157.129', 
    ), 
    ), 
    'partition' => 
    array (
     0 => 
     array (
     'name' => '/home', 
     'size' => '10', 
    ), 
     1 => 
     array (
     'name' => 'swap', 
     'size' => '10', 
    ), 
     2 => 
     array (
     'name' => '/opt', 
     'size' => '60', 
    ), 
     3 => 
     array (
     'name' => '/data', 
     'size' => '30', 
    ), 
    ), 
), 
) 

正如我們現在有適當的結構化數據的陣列，它應該是微不足道的輸出以任何所需的格式（即HTML表）中的數據。