I have a program running on my command line. The program allows one to type in a username and returns a bunch of information pertaining to that user. I assume it is possible to access this program from php, and even store the information in a variable. Anyone know how to do this though?
Thanks in advance for the advice
This link should help you. A quick example:
<?php
$out = array();
exec = ('ls /ver 2>&1', $out);
print_r($out);
?>
try using the system() command.
http://php.net/manual/en/function.system.php
or exec()
http://www.php.net/manual/en/function.exec.php
Read the documentation for system() and exec(), it should what you need.
Related
So I have this PHP code which is pretty simple.
$string = exec("ls foo");
In foo I have 4 files
foo
bar
hi
bye
But echo $string returns bye
How can I make it return all of the files? Is it not working because ls separates by tabs?
From the manual: http://php.net/manual/en/function.exec.php
Return Values
The last line from the result of the command. If you need to execute a command and have all the data from the command passed directly back without any interference, use the ˋpassthru()ˋ function.
Please do not use exec for file operations. PHP has a full set of functions for that purpose. You can start with dir:
http://php.net/manual/en/function.dir.php
Boris' suggestion is good, but it's a bit complicated to figure it out.
Simply use this
passthru ('ls');
or this to 'prettify' it
echo "<pre>";
passthru ('ls');
echo "</pre>";
This is my code for executing a command from PHP:
$execQuery = sprintf("/usr/local/bin/binary -mode M \"%s\" %u %s -pathJson \"/home/ec2/fashion/jsonS/\" -pathJson2 \"/home/ec2/fashion/jsonS2/\"", $path, $pieces, $type);
exec($execQuery, $output, $return);
the $return value is always 0 but $output is empty. The $output should be a JSON.
If I execute the same but removing one letter to binary (for example /usr/local/bin/binar ) I get (correctly) a $return = 127.
If I write other parameters (like -mode R which doesn't exit) I got errors from the console (which are correct as well).
If I run the exact $execQuery (which I printf before to be sure about quotation marks) on the console, it executes correctly. It's only the PHP side where I've got the error.
What can be wrong?
Thank you in advance.
Well, a couple of things might be happening...
This binary you're running write to something else that STDOUT (for instance, STDERR)
The env vars available to the PHP user differ from the env vars available to the user running console (and those vars are required)
PHP User does not have permission to access some files involved.
In order to debug, it might be better to use proc_open instead of exec, and check the STDOUT and STDERR. This might give you additional information regarding what's happening.
Suggestion (and shameless advertising)
I wrote a small utility library for PHP that executes external programs in a safer way and provides aditional debug information. It might help you to, at least pinpoint the issue.
I'm using system() PHP function to run some curl commands like this system("curl command here",$output); but it displays results on screen. Any way to avoid this output?
You're using the wrong function for that. According to the docs:
system() is just like the C version of the function in that it executes the given command and outputs the result.
So it always outputs. Use execDocs instead which does return (and not output) the programs output:
$last = exec("curl command here", $output, $status);
$output = implode("\n", $output);
Or (just for completeness) use output bufferingDocs:
ob_start();
system("curl command here", $status);
$output = ob_get_clean();
You coud try using output buffering.
ob_start();
system("curl command here",$output);
$result = ob_get_contents();
ob_end_clean();
You could either modify the command string and append " 1>/dev/null 2>&1" or - more elegantly - execute the process with a pipe (see example #2).
For a more refined control over the process' file handles, you can also use proc_open().
The system function displays the output from your command, so you're out of luck there.
What you want is to change system for exec. That function will not display the command's output.
No, you should use PHP curl library
I'm building a RAKEFILE and I want to display the output on a php generated page as it gets executed.
I tried using system() since the PHP docs mention this:
The system() call also tries to automatically flush the web server's output buffer after each line of output if PHP is running as a server module.
This seems to work with multiple shell comands but when I execute rake I only get the first line:
(in /Users/path/to/proj)
Any ideas?
Cheers!
Try use exec() function
exec($command, $output);
$output is an array
//retrieved data
for($out = '',$x = 0,$len = count($output); $x < $len; $x++) {
$out .= $output[$x] . "\r\n";
}
or simple:
$out = join("\r\n", $output);
The system() call also tries to automatically flush the web server's output buffer after > each line of output if PHP is running as a server module.
This means you would only get the last line of output from the return value. The example in the system() manual page shows that and it suggests to use passthru() to get raw output. I usually use exec() though.
Turs out both functions system() & exec() actually work. The generated rake output when using --verbose isn't taken into consideration though. That's why I was confused. If anyone has more extensive knowledge on the distinction, do share :)
I have a great Python program on my webserver, which I want to use from inside my PHP web app.
Here's an example of the python command, and output as you would see it in terminal:
>>> print MBSP.parse('I ate pizza with a fork.')
I/PRP/I-NP/O/NP-SBJ-1/O/i
ate/VBD/I-VP/O/VP-1/A1/eat
pizza/NN/I-NP/O/NP-OBJ-1/O/pizza
with/IN/I-PP/B-PNP/O/P1/with
a/DT/I-NP/I-PNP/O/P1/a
fork/NN/I-NP/I-PNP/O/P1/fork ././O/O/O/O/.
You might recognize this as a typical POS tagger.
In any case, I'm confused about how to use a PHP-based web app to send this program a string like "I ate pizza with a fork", and somehow get the response back in a way that can be further parsed in PHP.
The idea is to use PHP to pass this text to the Python program, and then grab the response to be parsed by PHP by selecting certain types of words.
It seems like in PHP the usual suspects are popen() and proc_open(), but popen() is only for sending, or receiving information - not both? Is popen() able to give me access to this output (above) that I'm getting from the Python program? Or is there a better method? What about curl?
Here are all my options in terms of functions in PHP:
http://us.php.net/manual/en/function.proc-open.php
I'm lost on this, so thanks for your wise words of wisdom!
I use exec() for this purpose.
exec($command, $output);
print_r($output);
If you want to get a little heavier / fancier... give your python script an http (or xmlrpc) front end, and call that with a GET/POST. Might not be worth all that machinery though!
You could use popen(), and pass the input to your Python script as a command line argument, then read the output from the file descriptor popen gives you, or proc_open() if you want to interact bi-directionally with the Python script.
Example 1 in the proc_open manual: http://us.php.net/manual/en/function.proc-open.php gives an example of this.
If your Python needs it as stdin, you could try popening a command line:
echo "I ate pizza!"|my_python_progam.py
and just read the output. As usual, do proper input validation before sending it to the command-line.
Something like this would work
$command = '/usr/bin/python2.7 /home/a4337/Desktop/script.py'
$pid = popen('$command',r)
........
........
.........
pclose($pid)