How can a PHP developer troubleshoot issues with displaying output from specific shell commands on a website?

The issue may be related to the use of shell_exec() function in PHP to execute shell commands. To troubleshoot this issue, the developer can check if the shell command is properly formatted, if the command requires specific permissions, or if there are any errors in the command output. Additionally, the developer can use error handling techniques to capture and display any errors that may occur during the execution of the shell command. 

<?php
$output = shell_exec('your_shell_command_here 2>&1');
if($output === null){
    echo "Error executing shell command";
} else {
    echo $output;
}
?>

Keywords

PHP shell commands output website troubleshooting

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