在 php while 循环中突出显示第一行答案

【问题标题】：Highlight first row in php while loop在 php while 循环中突出显示第一行
【发布时间】：2014-11-03 14:54:24
【问题描述】：

我正在从 mysql 数据库中获取所有行。现在我只想用类名keywordHighlight 突出显示 php while 循环中的第一行。

如何在 php while 循环结果中仅突出显示第一行？

if($numSearch > 0){     

echo "<font color='green'>We found $numSearch result(s).</font>";
    echo "<table width='100%' cellpadding='0' cellspacing='0'>";
    echo "<thead>";
    echo "<tr>";                
    echo "<td class='' valign='top' width='200'></td>";
    echo "<td class='' valign='top' width='125'></td>";                             
    echo "<td class='' valign='top' width='125'></td>";
    echo "<td class='' valign='top' width='125'></td>";                             
    echo "<td class='' valign='top' width='125'></td>";                             
    echo "</tr>";   
    echo "</thead>";
    echo "<tbody>";     


while($resGetSearch =  mysql_fetch_array($getSearch)){

    $SearchCdid = $resGetSearch['cdid'];
    $SearchFamilyName =  $resGetSearch['family_name'];          
    $SearchGivenName =  $resGetSearch['given_name'];            
    $SearchCompamyCid = $resGetSearch['cid']; 
    $SearchDepartment = $resGetSearch['department'];
    $SearchTitle = $resGetSearch['title'];

    $SearchComapnyName =  mysql_query("SELECT company_name FROM company WHERE cid = '$SearchCompamyCid' ");
    $resSearchCompanyName =  mysql_fetch_array($SearchComapnyName);     
    $companyName = $resSearchCompanyName['company_name'];

    if (strlen($companyName) >= 20) {
        $companyName =  substr($companyName, 0, 10). "" . substr($companyName, -5);
    }else{
        $companyName = $companyName;
    }

    // my Highlighted class = keywordHighlight";    


    echo "<tr onclick='getDetails($SearchCdid);' >";                                        
    echo "<td valign='top' >$companyName</td>";
    echo "<td valign='top'>$SearchFamilyName</td>";
    echo "<td valign='top'>$SearchGivenName</td>";
    echo "<td valign='top'>$SearchDepartment</td>";
    echo "<td valign='top'>$SearchTitle</td>";
    echo "</td>";
    echo "</tr>";       
    }
    echo "</tbody>";
    echo "</table>";                        
    echo "<hr/>";
    echo "<br/>";   

}//elseif is not empty search
elseif($numSearch === 0){
    echo "<font color='red'>No Matches.</font>";
}

【问题讨论】：

标签： php

【解决方案1】：

$first = true;

while ( $resGetSearch =  mysql_fetch_array($getSearch) )
{

    if ( $first == true )
    {
        // Add code here that only applies to the first iteration.
        $first = false;
    }
    else
    {
        // Add code here that only applies to the 2, 3, and so on.
    }

}

【讨论】：

【解决方案2】：

放一些标志$f=0; 如果f==0 then do 是这样的：

    $highlight="<div class='keywordHighlight'>valur of first row</div>";// instead of dive you can use table also it depends on how you want to display.
$f=$f+1;

然后在其他部分休息。

【讨论】：

【解决方案3】：

这样做

$i = 1;
while($resGetSearch =  mysql_fetch_array($getSearch)){ 
    $highlight = $i == 1 ? 'keywordHighlight' : '';
    echo "<tr class='{$highlight}' onclick='getDetails($SearchCdid);' >";
    ---------------
    -------------
    -------------

    $i++;
}

仅适用于 CSS

或者你可以只用 css 突出显示它

#highlight tbody tr:nth-child(1){
  background: #ff6600;
}

有更多优雅的方式只突出显示第一行，只有 css 不需要编码，请考虑示例 http://jsbin.com/soravuzakahu/1/

【讨论】：

它没有突出显示第一行。
@Shibbir 你确定你在 keywordHighlight 类的 css 中具有正确的行高亮属性和值吗？
@Shibbir 分享你的 css，只关联 css

【解决方案4】：

使用一个标志并将其值设置为 true 并在循环中检查其值，如果为 true 则打印类名并将其值设置为 false。像 $flag=true;然后在while循环中检查

 if($flag==true) { 
    <td class='yourclassname';
  $flag= false;
  }

【讨论】：

【解决方案5】：

<?php
if($numSearch > 0){     

echo "<font color='green'>We found $numSearch result(s).</font>";
    echo "<table width='100%' cellpadding='0' cellspacing='0'>";
    echo "<thead>";
    echo "<tr>";                
    echo "<td class='' valign='top' width='200'></td>";
    echo "<td class='' valign='top' width='125'></td>";                             
    echo "<td class='' valign='top' width='125'></td>";
    echo "<td class='' valign='top' width='125'></td>";                             
    echo "<td class='' valign='top' width='125'></td>";                             
    echo "</tr>";   
    echo "</thead>";
    echo "<tbody>";     


    $i = 0;
while($resGetSearch =  mysql_fetch_array($getSearch)){
    ++$i;
    $SearchCdid = $resGetSearch['cdid'];
    $SearchFamilyName =  $resGetSearch['family_name'];          
    $SearchGivenName =  $resGetSearch['given_name'];            
    $SearchCompamyCid = $resGetSearch['cid']; 
    $SearchDepartment = $resGetSearch['department'];
    $SearchTitle = $resGetSearch['title'];

    $SearchComapnyName =  mysql_query("SELECT company_name FROM company WHERE cid = '$SearchCompamyCid' ");
    $resSearchCompanyName =  mysql_fetch_array($SearchComapnyName);     
    $companyName = $resSearchCompanyName['company_name'];

    if (strlen($companyName) >= 20) {
        $companyName =  substr($companyName, 0, 10). "" . substr($companyName, -5);
    }else{
        $companyName = $companyName;
    }

    // my Highlighted class = keywordHighlight";    

    if($i == 1)
        echo "<tr onclick='getDetails($SearchCdid);' >";
    else
        echo "<tr class='keywordHighlight' onclick='getDetails($SearchCdid);' >";
    echo "<td valign='top' >$companyName</td>";
    echo "<td valign='top'>$SearchFamilyName</td>";
    echo "<td valign='top'>$SearchGivenName</td>";
    echo "<td valign='top'>$SearchDepartment</td>";
    echo "<td valign='top'>$SearchTitle</td>";
    echo "</td>";
    echo "</tr>";       
    }
    echo "</tbody>";
    echo "</table>";                        
    echo "<hr/>";
    echo "<br/>";   

}//elseif is not empty search
elseif($numSearch === 0){
    echo "<font color='red'>No Matches.</font>";
}

【讨论】：

【解决方案6】：

您可以在循环外添加一个布尔值。像这样：

$first = true;

while($resGetSearch =  mysql_fetch_array($getSearch)){

    if(first == true){
        // Add code here that only applies to the first iteration.
    }
    $first = false;
}

【讨论】：