Mastering PHP Exec and Passthru A Key to Efficient Scripting

Top 82 PHP Interview Questions. The difference between the PHP shell exec and passthru() function is that the passthru() function deals with the binary data returned by the given command ... Whilst I can do exec, system, passthru etc in PHP to get the output of various commands (such as ping, ipconfig etc), when I try to execute the ... That's why we really like PHP's “exec” and “passthru” that we have used quite a bit in the past, to get through to that underlying operating ... exec() - Execute an external program; passthru() - Execute an external program and display raw output; popen() - Opens process file pointer; escapeshellcmd ... exec() accepts command as input and returns the last line from the result of the command. · passthru() executes a command and passes the raw ... They differ in how they handle the output of the program: exec() executes the command and returns the last line of output as a string, or FALSE on error. Calling exec() is usually preferred when the output of your program is irrelevant, whereas passthru() automatically prints your output. Here is both in action: PHP supports one execution operator: backticks (``). Note that these are not single-quotes! PHP will attempt to execute the contents of the backticks as a ... Though the passthru() function is similar to the exec() or system() function in that it executes a command, it should be used in their place when the output ...