Php Download File Not Working : I have wrote a script which download output of text box. This script works fine on local server, it download the file successfully  but when i put script on live server, the download file does not work. When "download output" button is clicked, instead of downloading file the output of page is shown on next page. See live script here.. http://www.globalitsoft.net/scripts/test.php

Here is the code of script. 


    <?php
    
    error_reporting(0);
    $mytext = "";
    
    $txt = preg_replace('/\n+/', "\n", trim($_POST['inputtext']));
    $text = explode("\n", $txt);
    $output  = array();
    
    
    
    if(isset($_POST["submit"]) || isset($_POST["download"]) ) {
    
    
        for($i=0;$i<count($text);$i++) {
    
            $output[] .= trim($text[$i]) . ' AAAAA'.PHP_EOL;
    
        }
    
    }
    
    	if(isset($_POST["download"]) ) {
    	ob_clean();	
    	$filename = "file-name-" .date('mdY-His'). '.txt';					
    	$handle = fopen('php://output', "w");
    	fwrite($handle, implode($output));
        fclose($handle);
    	header('Content-Description: File Transfer');
        header("Content-type: application/force-download");
    	header("Content-Type: application/octet-stream charset=utf-8");
        header('Content-Disposition: attachment; filename="'.basename($filename).'"');
    	header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
    	header('Expires: 0');
        header('Pragma: public');
    	header('Content-Transfer-Encoding: binary');
        header('Content-Length: ' . strlen(implode($output)));
    	readfile($filename);
    	
      	exit();
    	 
    	} 
    
    ?>
    
    
    <form method="POST" action="test.php">
        <textarea name="inputtext" rows="10" cols="100" placeholder="Enter Any Text!" required><?php if(!empty($_POST["inputtext"])) { echo $_POST["inputtext"]; } ?></textarea>
        <br><br>
        <input type="submit"  name="submit" value="Do it!">
        <br><br>
        <p>Output goes here. </p>
        <textarea name="oputputtext" rows="10" cols="100" ><?php echo implode($output);?></textarea>
        <input type="submit"   name="download" value="Download Output">
    </form>

