using shell_exec to call a perl script from php

Question

I am having an issue with executing a perl script from php using the shell_exec() function.

This is what I have tried (and it has worked before).

$perl = shell_exec("/usr/bin/perl cbh_script_clean.pl");
echo ($perl);

This will not work as $perl does not contain anything after this is executed.

Thoughts?

All help is appreciated!

Thanks.

What happens when you run /usr/bin/perl cbh_script_clean.pl straight from the command line? — webbiedave
– webbiedave, Commented May 11, 2011 at 23:06
But what happens? What do you see on the screen after you run the command? — webbiedave
– webbiedave, Commented May 11, 2011 at 23:08
Try adding 2>&1 after the command. Chances are the pathname to the perl script is just wrong. Also have a look into the error.log, which otherwise contains the according message. — mario
– mario, Commented May 11, 2011 at 23:11
@webbie: the script is run fully. it successfully runs the script — jmg0880
– jmg0880, Commented May 11, 2011 at 23:11

mario · Accepted Answer · 2011-05-11 23:19:50Z

7

I'll make that an answer then.

You can often append 2>&1 to redirect the stderr output to the normal stdout stream. This way you receive any error messages in the PHP variable. (Otherwise they will get lost with system/exec/shell_exec, which is why people sometimes use proc_open with explicit pipes instead).

$perl = shell_exec("/usr/bin/perl cbh_script_clean.pl 2>&1");
echo ($perl);

answered May 11, 2011 at 23:19

mario

146k20 gold badges243 silver badges293 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Eric Macedo · Accepted Answer · 2020-06-29 18:56:13Z

1

Try this:

$perl = shell_exec("/usr/bin/perl cbh_script_clean.pl 2>/dev/null >/dev/null &"); echo ($perl);

answered Jun 29, 2020 at 18:56

Eric Macedo

111 bronze badge

Collectives™ on Stack Overflow

using shell_exec to call a perl script from php

2 Answers 2

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related