string - How do I get a file's path in PHP? -

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i have check using file_exists function... but, if use 

if (file_exists('http://horabola.com/imagens/dt_2845.jpg')) {   //code }

it doesn't work...

i know , i'm sure file "dt_2845.jpg" exists in folder "imagens" .... now, how check that? how server's file path?

try:

if (file_exists($_server['document_root'].'/imagens/dt_2845.jpg')) {   //code }

good luck


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