使用变量循环PHP中的行

Question

总菜鸟，无法使用变量循环遍历行。 我想打印专栏header_en的内容。所以我：

将$lang设置为en，连接到db和SELECT *

然后：

while($row = mysql_fetch_array( $result )) {
    echo "<h3>Headline is: $row['header_$lang]</h3>";
    echo "<p>Author: $row[author]</p>";
} 

我一直在寻找几个小时，尝试连接$lang变量，各种各样的东西......没有运气。我的语法也不是那么强大。

任何指针？

Answer 1

尝试

echo "<h3>Headline is: " . $row['header_'.$lang] . "</h3>";

甚至

$headerLanguage = 'header_'.$lang;
while($row = mysql_fetch_array( $result )) { 
    echo "<h3>Headline is: " . $row[$headerLanguage] . "</h3>"; 
    echo "<p>Author: $row[author]</p>"; 
} 

Answer 2

也许你需要

echo "<h3>Headline is: ".$row['header_'.$lang]."</h3>"; 
echo "<p>Author: ".$row['author']."</p>"; 

Answer 3

如果你在php中使用引号，你需要知道：

echo 'single quotes are faster, but dont see variables ' . $variable;
echo "double quotes can see them like so: $variable";
echo "to show array in doble quotes use brackets {$array['key']}";