php path issue, solution needed -

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the following code works when place script in root 

if (file_exists("pics/2012/blackhall primary/" . $_files["file"]["name"]))       {       echo $_files["file"]["name"] . " exists. ";       }

but if move script folder /teacher/ no longer works.

i thought make path ~/pics/2012/blackhall primary/ work does.

any ideas? thanks

use / @ beginning indicate root folder original php file located

if (file_exists("/pics/2012/blackhall primary/" . $_files["file"]["name"])) {   echo $_files["file"]["name"] . " exists. "; }

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