note 124279 added to book.exec

There is also the backtick ("back-tick") execution operator: https://www.php.net/manual/en/language.operators.execution.php <?php $output = ls -al; echo "<pre>$output</pre>"; ?> This operator runs the command given inside the backticks, and supports string interpolation just like double quotes: <?php $host = 'example.com'; echo ping -n 3 {$host}; ?> Backticks have no special meaning inside of double quotes: <?php echo "I said ls to you!"; # outputs: I said ls to you! ?> Since this operator runs a command on your system, and accepts variables, you must be very careful to sanitize input and understand what's being run -- don't use it lightly. The same can be said of the execution functions in this chapter. ---- Server IP: 208.43.231.9 Probable Submitter: 82.199.157.54 (proxied: 96.10.213.43) ---- Manual Page -- http://php.net/manual/en/book.exec.php Edit -- https://master.php.net/note/edit/124279 Del: integrated -- https://master.php.net/note/delete/124279/integrated Del: useless -- https://master.php.net/note/delete/124279/useless Del: bad code -- https://master.php.net/note/delete/124279/bad+code Del: spam -- https://master.php.net/note/delete/124279/spam Del: non-english -- https://master.php.net/note/delete/124279/non-english Del: in docs -- https://master.php.net/note/delete/124279/in+docs Del: other reasons-- https://master.php.net/note/delete/124279 Reject -- https://master.php.net/note/reject/124279 Search -- https://master.php.net/manage/user-notes.php