pipe - Different output with php client and with a browser -

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maybe question simple, i'm not able answer it.

i have little php code:

<?php  $line="echo 'hello' | lpr -pmyprinter"; $out=system($line,$output); ?>

when execute code using command line (i use linux php 5.3.6 , apache 2.2.17) it's printed 'hello' in myprinter.

if execute code using browser looks pipe ignored!

i have tried exec(), passthru(), etc. , results same.

thanks help.

p.s: ran code php 5.1.¿¿??

try using following:

echo `echo hello | lpr -pmyprinter`

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