Calling a Java program in PHP and getting output

Question

I am writing a PHP program and part of an XAMPP site that I have running on the localhost of my machine. I would like the file to input two of its strings into a Java program that I have saved on the desktop of my computer, and then store the output as a string. I have been trying to use shell_exec() but I have not gotten it to work.

Any tips?

    <?php
$artist = $_POST['artist'];
$songname = $_POST['songname'];

    $artist = preg_replace('/\s+/', '', $artist);
    $songname = preg_replace('/\s+/', '', $songname);

    $artist=strtolower($artist);
    $songname=strtolower($songname);

    echo $artist;
    echo $songname;

    $output = shell_exec("/Users/ianterry/Desktop/CussCalc2/java CussCalc '$artist' '$songname'");
    $output = shell_exec("/usr/bin/java -version");
    echo $output;
?>

So far, the only output I get when it is run is the two strings being echo'd.

I did realize that. I put that in after testing the former to see if it would give any output; neither did. — Jabberwock Stomp
– Jabberwock Stomp, Commented Dec 2, 2015 at 11:49
I dont know much PHP but looking at the docs php.net/manual/en/function.shell-exec.php I see that "It is not possible to detect execution failures using this function. exec() should be used when access to the program exit code is required.". Maybe use the exec command instead and debug from there? — ug_
– ug_, Commented Dec 2, 2015 at 11:50
maybe use proc_open instead of shell_exec at least you will see what exactly is happening — Robert
– Robert, Commented Dec 2, 2015 at 13:19

Community · Accepted Answer · 2017-05-23 12:15:13Z

0

At first you should check shell_exec and exec are allowed: PHP exec - check if enabled or disabled

Also, take a look at How to run Java program and get output in PHP?

edited May 23, 2017 at 12:15

CommunityBot

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answered Dec 2, 2015 at 11:52

Alex Babak

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