Tarik questions

• In PHP: If I start a new line while writing a string in my source is it necessary to concatenate the string?
• Accessing a node-set in a JavaScript XPath query
• Is comparing a variable to $_SERVER['PHP_SELF'] safe usage?
• JQuery: Are variables declared inside $(document).ready(); globals? And when can globals be avoided?
• Two identical strings, yet different lengths. Trimmed, cleansed, etc
• Salting my hashes with PHP and MySQL
• JavaScript: Is it possible to pass a variable into a callback function that is assigned to a variable?
• JavaScript file not updating no matter what I do

Tarik answers