<?PHP class cat { public function show_output($prepend, $output = '') {echo $prepend . $output;} public function show_out($output) {echo $output;} } $cat = new cat(); $cat->show_output('Files: ', trim(`ls`)); // this gives invalid args to shell_exec $cat->show_output('Files: ', `ls`); // this causes a segmentation fault $cat->show_out(`ls`); // this causes a segmentation fault function show_outputa($prepend, $output) {echo $prepend . $output;} show_outputa('Files: ', `ls`); // this works as expected
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