第15行的PHP语法错误[关闭]

I am receiving the following error:

Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' on line 15

<?php 
    if ( is_single() && $post->post_parent ) {
        echo '<script src="<?php bloginfo'template_directory'); ?>/_/js/ZeroClipboard.min.js"></script>';
        echo '<script src="<?php bloginfo('template_directory'); ?>/_/js/functions.js"></script>';
    }
?>

Line 15: echo '<script src="<?php bloginfo'template_directory'); ?>/_/js/ZeroClipboard.min.js"></script>';

You are missing opening bracket, moreover you are using <?php ?> in your echo statement which is invalid

 bloginfo('template_directory'); ?>

Correct syntax

<?php 
    if ( is_single() && $post->post_parent ) {
?>
       <script src="<?php echo bloginfo('template_directory'); ?>/_/js/ZeroClipboard.min.js"></script>
       <script src="<?php echo bloginfo('template_directory'); ?>/_/js/functions.js"></script>
<?php
    }
?>

you are echo the text and also include php tag inside the echo text it should be

<?php 
if ( is_single() && $post->post_parent ) { ?>
    <script src="<?php bloginfo('template_directory'); ?>/_/js/ZeroClipboard.min.js">  </script>;
    <script src="<?php bloginfo('template_directory'); ?>/_/js/functions.js"></script>;
<?php }
?>

you missed an opening bracket after bloginfo, plus you can't open a new php tag within a php script, therefor this line should work.

echo '<script src="'.bloginfo('template_directory') .'/_/js/ZeroClipboard.min.js"></script>';

<?php 
    if ( is_single() && $post->post_parent ) {
        echo '<script src="'.bloginfo('template_directory').
'/_/js/ZeroClipboard.min.js"></script><script src="'. bloginfo('template_directory').
'/_/js/functions.js"></script>';
    }
?>

Try this

if ( is_single() && $post->post_parent ) {
        echo '<script src='.bloginfo("template_directory").'/_/js/ZeroClipboard.min.js"></script>';
        echo '<script src='.bloginfo("template_directory").'/_/js/functions.js"></script>';
}