我可以在 PHP 的 echo 语句中使用 strtolower() 之类的函数吗？

Question

我试图在 echo 语句中将变量名称转换为全部小写。 例如：

$categories = array('1'=>'Holiday')

foreach ($categories as $categoryId => $category) {
   echo "<div class=\"container\"> <a href=\"category.php?categoryId=$categoryId\">
         <img src=\"images/categories/strtolower($category).jpg\" alt=\"holiday turkey\" class=\"image\">
         <div class=\"overlay\"> <div class=\"text\">$category</div> </div> </a> </div> ";}

我想把变量名全部转换成小写，这样我就可以得到图片了。 我尝试将图像名称更改为 Holiday.jpg 但我想知道这是否可行...

先感谢您！

Answer 1

$categories = array('1'=>'Holiday')

foreach ($categories as $categoryId => $category) {
   echo "<div class='container'><a href='category.php?categoryId=$categoryId'>
         <img src='images/categories/".strtolower($category).".jpg' alt='holiday turkey' class='image'>
         <div class='overlay'> <div class='text'>$category</div> </div> </a> </div>";
}

Answer 2

是的，你可以这样做：

foreach ($categories as $categoryId => $category) {
    echo "<div class=\"container\"> <a href=\"category.php?categoryId=$categoryId\">
         <img src=\"images/categories/" . strtolower($category) . ".jpg\" alt=\"holiday turkey\" class=\"image\">
         <div class=\"overlay\"> <div class=\"text\">$category</div> </div> </a> </div> ";
}