Why are My Bash Scripts Not Executing from PHP?

Executing Bash Commands from PHP: Troubleshooting Non-Executing Scripts

A user is experiencing difficulty executing a Bash script from a PHP file. Despite attempts to use shell_exec and system, the script remains unexecuted. However, other commands like "ls" function correctly using shell_exec.

Potential Cause and Solution:

The issue most likely stems from executing the script from the wrong directory. To resolve this, the user needs to change the current working directory to the directory where the script resides before executing it. This ensures the correct context for the script to execute.

Code Snippet:

The following code snippet demonstrates how to execute the Bash script correctly:

<code class="php">$old_path = getcwd();
chdir('/my/path/'); // Change to the script's directory
$output = shell_exec('./script.sh var1 var2');
chdir($old_path); // Return to the previous working directory</code>

In this code, getcwd() retrieves the current working directory, chdir('/my/path/') sets the working directory to the script's path, shell_exec('./script.sh var1 var2') executes the script with the given arguments, and chdir($old_path) reverts to the previous working directory.

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