php - How to specify a base address when opening a link which uses relative addresses -

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how can php 5.2.9 open link , specify base uri (?) link's relative addresses css file , other files work ?

i tried:

$link = mysql_result($array,0,2); // eg 'https://xyz.net/login' $directory = dirname($link); chdir($directory); readfile($link); unlink($link);

but login page can't find css file @ relative address


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