使用PHP从通用文件构造JavaScript代码时出现“SyntaxError：unterminated string literal”

I'm trying to use PHP to generate a JavaScript switch block by taking input from TemplateList.txt. It works fine when I only have one line in TemplateList.txt, but when I have two or more I get an error in the console saying I have a

SyntaxError: unterminated string literal

on the line of the php opening tag, I can't see any unclosed strings.

<?php 
$listHandle = fopen('templates/TemplateList.txt', 'r');

while (!feof($listHandle)) {                    
   $thisTemplate = fgets($listHandle);   
   echo "case \"" . $thisTemplate . "\": " . $thisTemplate . "();  break; "; 
}  

fclose($listHandle);
?>

My TemplateList.txt file looks like this:

heart_by_john
dog_by_sue

What am I doing wrong?

The fgets() function includes the line break in the returned string, so you add a line break to your JS inside the string. Replace

$thisTemplate = fgets($listHandle);

by

$thisTemplate = trim(fgets($listHandle));

Hi that's because there is a line break after each word in your list

This code works for me.

$path = 'templates/TemplateList.txt';

$str = '';
if(file_exists($path)){         
    $listHandle = file($path, FILE_IGNORE_NEW_LINES);
    foreach ($listHandle as $line_num => $line){                   
        $str .= "case \"" . $line . "\": " . $line . "();  break; "; 
    }
}
echo $str;