Pear problem with graphiz library

Hi folks, i have a problem with graphviz library, i have installed pear and tested it correctly folowing the guidelines on the official website, also i ensured i had all the include path setted properly.Although i encountered theese errors when i try to run graphiz example Here the code i try to execute : <?php require_once 'Image/GraphViz.php'; $gv = new Image_GraphViz(); $gv->addEdge(array('wake up' => 'visit bathroom')); $gv->addEdge(array('visit bathroom' => 'make coffee')); $gv->image(); ?> Here the errors : ----------------------------------------------------------------- Strict Standards: Non-static method System::mktemp() should not be called statically, assuming $this from incompatible context in pear\Image\GraphViz.php on line 1005 Strict Standards: Non-static method System::_parseArgs() should not be called statically, assuming $this from incompatible context in pear\System.php on line 393 Strict Standards: Non-static method Console_Getopt::getopt2() should not be called statically, assuming $this from incompatible context in pear\System.php on line 84 Strict Standards: Non-static method Console_Getopt::doGetopt() should not be called statically, assuming $this from incompatible context in pear\Console\Getopt.php on line 75 Fatal error: Class 'PEAR' not found in \pear\Console\Getopt.php on line 109 ---------------------------------------- I have followed theese instruction correctly and i can see the bool(true) message, so i can't figure out why it complain about missing PEAR class (the filePera.php is in under /pear directory) this is the guidelines i have followed to set up pear : http://pear.php.net/manual/en/installation.checking.php Do you have any ideas about solving the problem?Thank you in advance, regards, Matt