使用沒有Smarty的fetch（）？

Question

Smarty 3有一個選項來設置（分配）一個變量，然後將文件包含（獲取）到一個新變量。
如何在沒有Smarty課程的情況下做到這一點？ file_get_contents不起作用，還有別的嗎？

例如，這是Smarty的代碼：

<?php 
$variable = 'Hello World'; 
$smarty->assign('variable', $variable); 
$content = $smarty->fetch('content.tpl'); // content.tpl have "{$variable}" inside 
echo '<script>document.write("' . $content . '")</script>'; // this will output <script>document.write("Hello World")</script> 
?> 

我想這樣做不Smarty的：

<?php 
$variable = 'Hello World'; 
$content = file_get_contents('content.php'); // content.php have "echo $variable;" inside 
echo '<script>document.write("' . $content . '")</script>';// this needs to output <script>document.write("Hello World")</script>, but it's outputing echo $variable; 
?> 

Answer 1

您可以緩衝招數優勢。

function fetch($filename, array $vars) { 

    ob_start(); // Start output buffering 

    extract($vars); // Extract variables 

    require($filename); // Include a file 

    return ob_get_clean(); // Pass variables to included filename and return output as a string 
} 

然後你就可以使用它像這樣：

$content = fetch('content.php', array(
    'variable' => 'Hello World', 
    'name'  => 'John Doe', 
)); 

echo $content; 

我content.php看起來像如下：

<div> 
    <b><?php echo $variable; ?></b>, you're logged in as <?php echo $name; ?> 
</div> 

它輸出的Hello World，你登錄爲李四