SyntaxError: unterminated string literal calling php function in javascript function

Question

What I am trying to do here is call my php function from inside of a javascript function and it throws the unterminated string literal error from

var letters = "<?php echo GetRandLine('en_lang.txt'); ?>"; 

allthough the php function is returned correctly. What the php function is doing is returning a list of words to search from en_lang.txt.So from what I have gatherd it is processing the the <?php ?> as the </script> tag or is it something else.

php:

    if (!function_exists('GetRandLine'))
    {
        function GetRandLine($name)
        {
            $file = fopen("$name","r");
        $text = array();
        $count = 0;

        while(!feof($file))
        {
            ++$count;
            $text[] = fgets($file);
            //echo fgets($file). "<br />";
        }

        fclose($file);

        $n = rand(0,100);

        $ntext = $text[rand(0,$count)];
        //echo $n." ";
        if($n > 50)
        {
            $ntext = $ntext . " " . $text[rand(0,$count)];
        }
        if($n > 80 && $n < 90)
        {
            $ntext = $ntext . " " . $text[rand(0,$count)];
        }
        if($n > 85 && $n < 88)
        {
            $ntext = $ntext . " " . $text[rand(0,$count)];
        }

        return $ntext;
    }
}

javascript:

    function clicker() 
    {
        var letters = "<?php echo GetRandLine('en_lang.txt'); ?>";
        document.getElementById('theinput').value = letters;
        document.getElementById("clicker").click();

    }

Answer 1

从GetRandLine返回的字符串中可能包含麻烦的字符，包括换行符，这会引起您提到的错误，您应该对其进行编码

var letters = <?php echo json_encode(GetRandLine('en_lang.txt')); ?>;