Joshxtothe4 questions

• Arbitrary image resizing in PHP
• file_get_contents creating an empty file
• is declaring a variable an instruction
• uploading a file via ajax with php
• maintaining state without a cookie
• forcing a file to download [duplicate]
• php giving a blank page, no errors
• error clause for file_put_contents
• Session Hijacking in practice
• Clicking through layers/divs

Joshxtothe4 answers