donglei2022 2014-02-12 17:17
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如何在<head>标记内使用PHP添加css文件？

Ok, let me explain:

I have a some files, something basic like this:

index.php

<html>
      <head>

            <title>Simple page</title>

      </head>

      <body>

            <?php include 'home.php'; ?>

      </body>
</html>

home.php

<div class="thisWillBeBlue">Still not blue</div>

style.css

.thisWillBeBlue {background: blue}

Now the question: Using php I want to insert the style.css inside the head tag, calling it from the file home.php. Well, I came out with a solution, but it was not very effective:

index.php

<?php $css = array(); 
      $css[] = 'linktothecss.css'

?>

<html>
      <head>

            <title>Simple page</title>

            <?php

                foreach($css as $item){

                    echo "<link rel='stylesheet' href='".$item."' />";

                }

            ?>

      </head>

      <body>

            <?php include 'home.php'; ?>

      </body>
</html>

But the problem it is, If I call the css from home.php it will be added to the array later, therefore it will not be echoed inside the head tag. Any ideas?

  • 写回答

3条回答 默认 最新

  • duanhao4156 2014-02-12 17:36
    关注

    You could do it using ob_start() and ob_end_flush() functions e.g.

    index.php

    <?php

$csspage = "default.css";
function loadCSS($buffer) {
  global $csspage;  
  return (str_replace('{{ css }}', $csspage, $buffer));
}

ob_start("loadCSS"); ?>

<html>
   <head>
      <!-- the string {{ css }} is just a placeholder that will be replaced 
           with the new value of $csspage defined later in the code, otherwise
           it will replaced with its initial value (default.css)
      -->
      <link href="{{ css }}" /> 
   </head>

<body>
     <?php include 'home.php'; ?>
</body>

</html>

<?php ob_end_flush(); ?>

    home.php

     <?php $csspage = "custom_style.css";  ?> 
 <div class="thisWillBeBlue">blue</div>

    Further reference: http://it1.php.net/ob_start

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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