PHP脚本搜索CSV文本文件

Question

我正在使用此PHP脚本来搜索Christian Heilmann的CSV文本文件。但是，目前，当你第一次访问该网站时，没有任何结果，直到你进行搜索。如何使其显示标准数据列表直到用户搜索基本数据。

function csvtoservice($url,$options){ 
    $csv = get($url); 
    $lines = preg_split('/\r?\n/msi',$csv); 
    $columns = split(',', 
       strtoLower(
       preg_replace('/\s/','',$lines[0]) 
      ) 
      ); 
    $colstring = join(',',$columns); 

    if($options['preset']){ 
    $pres = $options['preset']; 
    foreach(array_keys($pres) as $p){ 
     $presetstring .= ' and '.$p.' like "%'.$pres[$p].'%"'; 
    } 
    $columns = array_diff($columns,array_keys($pres)); 
    } 

    if($options['filter']){ 
    $columns = array_diff($columns,$options['filter']); 
    } 

    if($options['prefill']){ 
    foreach(array_keys($options['prefill']) as $p){ 
     if(!isset($_GET[$p])){ 
     $_GET[$p] = $options['prefill'][$p]; 
     } 
    } 
    } 

    if($options['rename']){ 
    $renames = array_keys($options['rename']); 
    foreach($columns as $k=>$c){ 
     foreach($renames as $r){ 
     if(!in_array($c,$renames)){ 
      $displaycolumns[$k] = $c; 
     } else { 
      if($c == $r){ 
      $displaycolumns[$k] = $options['rename'][$r]; 
      } 
     } 
     } 
    } 
    } else { 
    $displaycolumns = $columns; 
    } 

    foreach($columns as $c){ 
    filter_input(INPUT_GET, $c, FILTER_SANITIZE_SPECIAL_CHARS);  
    $fromget[$c] = $_GET[$c]; 
    } 

    $current = preg_replace('/.*\/+/','',"#section4",$_SERVER['PHP_SELF']); 

    $csvform = '<form action="'.$current.'">'; 
    foreach($columns as $k=>$c){ 
    $csvform .= '<div><label for="'.$c.'">'. 
       ($options['uppercase'] ? 
        ucfirst($displaycolumns[$k]) : 
        $displaycolumns[$k]). 
       '</label></br>'. 
       '<input type="text" id="'.$c.'" name="'.$c. 
       '" value="'.$fromget[$c].'"></div>'; 
    } 
    $csvform .= '<div id="bar"><input type="submit" name="csvsend"'. 
       ' value="search"></div>'; 
    $csvform .= '</form>'; 

    if(isset($_GET['csvsend'])){ 
    $yql = 'select * from csv where url="'.$url.'" '. 
      'and columns="'.$colstring.'"'; 
    foreach($columns as $c){ 
     if(isset($_GET[$c]) && $_GET[$c]!=''){ 
     $yql .= ' and '.$c.' like "%'.$_GET[$c].'%"'; 
     } 
    } 
    $yql .= $presetstring; 
    $yqlquery = '<div id="yql">'.$yql.'</div>'; 

    $yqlendpoint = 'http://query.yahooapis.com/v1/public/yql?format=json'; 
    $query = $yqlendpoint.'&q='.urlencode($yql); 
    $data = get($query); 
    $datadecoded = json_decode($data); 

    $csvtable = '<table><thead><tr>'; 
    foreach($columns as $k=>$c){ 
     $csvtable .= '<th scope="col">'. 
        ($options['uppercase'] ? 
         ucfirst($displaycolumns[$k]) : 
         $displaycolumns[$k]). 
        '</th>'; 
    } 
    $csvtable .= '</tr></thead><tbody>'; 
    if($datadecoded->query->results->row){ 

    foreach ($datadecoded->query->results->row as $r){ 
     $csvtable .= '<tr>'; 
     foreach($columns as $c){ 
     $csvtable .= '<td>'.$r->$c.'</td>'; 
     } 
     $csvtable .= '</tr>'; 
    } 
    } else { 
    $csvtable .= '<tr><td class="error" colspan="'.sizeof($columns). 
        '">No results found.</td></tr>'; 
    } 
    $csvtable .= '</tbody></table>'; 
    } 
    return array(
       'table'=>$csvtable, 
       'form'=>$csvform, 
       'query'=>$yqlquery, 
       'json'=>$data 
      ); 
} 

function get($url){ 
    $ch = curl_init(); 
    curl_setopt($ch, CURLOPT_URL, $url); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
    $output = curl_exec($ch); 
    curl_close($ch); 
    return $output; 
} 

Answer 1

为什么不设置一个默认值，如果没有搜索项通过表单？