How to output JavaScript with PHP



I am new to PHP. I need to output the following JavaScript with PHP. This is my code:


echo "<script type="text/javascript">";
echo "document.write("Hello World!")";
echo "</script>";


But it's showing the error:

Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /var/www/html/workbench/person/script.php on line 4

Can anyone please help? I also need some simple tutorials on how to use PHP, HTML and JavaScript for an application.

7/22/2009 9:40:50 AM

You should escape the JavaScript string delimiters inside the PHP string. You're using double quotes for both PHP and JavaScript strings. Try like this instead:


// Here, we use single quotes for PHP and double quotes for JavaScript
echo '<script type="text/javascript">';
echo 'document.write("Hello World!")';
echo '</script>';


You have to escape quotes on both JavaScript and PHP when the string delimiter are the same as the quotes:

echo "\""; // escape is done using a backslash
echo '\'';

Same in JavaScript:

alert("\""); // escape is done using a backslash
alert(echo '\'');

But because it's very hard to read a string with such escape sequences, it is better to combine single with double quotes, as needed:

echo '"';
echo "'";
11/13/2012 1:42:57 PM

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