echo does not work in php code
 

it works till half of the code..
after two blocks stop givin output on the screen..
echo value of some variable.. that is global..
reason not giving its output

You will need to show the code.

if i print echo "hi" also within php tag it does not print

are you using php tags ?

<?php

echo "Hello world" ;

?>


Name the above file as hello.php run following command.

php hello.php


If still doesn't work, then let me know how did you install your php, was it a compiled (rpm) or you did all compiling stuff.