Php create zip file (from post attachments wordpress)

Question

I am trying to create a zip file from post attachments in wordpress .

I have tried both methods below - but it results in nothing (No error messages , no file create

Answer 1

Ok - I will answer my own question here ..

I have confirmed my own suspicions - PHP can not create ZIP when passed over HTTP - so we need a PATH and not a URL ...

So for example in Wordpress case, need to use get_attached_file() to produce real path ..

Array ( 
[0] => C:\Documents and Settings\OB\htdocs\test_env\wp-content\uploads\2012\03\wrt-62316IMAG0659.jpg 
[2] => C:\Documents and Settings\OB\htdocs\test_env\wp-content\uploads\2012\03\wrt-85520_IGP0255.jpg
[3] => C:\Documents and Settings\OB\htdocs\test_env\wp-content\uploads\2012\03\wrt-85520_IZTP0635.jpg
[4] => C:\Documents and Settings\OB\htdocs\test_env\wp-content\uploads\2012\03\wrt-85520_ITG035t5.jpg
[5] => C:\Documents and Settings\OB\htdocs\test_env\wp-content\uploads\2012\03\wrt-85520_IRTT7375.jpg )

(Thanks @DaveRandom for his comment about seeing the var_dump array -I had actually looked at it many times, but until someone specifically asked to see it I did not pay much attention.)

Then it made me remember another problem I had long time ago with gdlib - about PHP stream functions , creating files - and HTTP. For example image libraries like gdlib, or pdf dynamic creation they all fail on HTTP.