How can the issue of PHP waiting for a C program to finish be resolved internally within PHP, without relying on external workarounds?

Issue: PHP can wait for a C program to finish by using the `exec` function, but this can cause PHP to block until the C program completes its execution. To resolve this internally within PHP, you can use the `proc_open` function to create a process and interact with it asynchronously. 

// Create a process to execute the C program
$descriptorspec = [
    0 => ['pipe', 'r'],  // stdin
    1 => ['pipe', 'w'],  // stdout
    2 => ['pipe', 'w']   // stderr
];
$process = proc_open('/path/to/your/C/program', $descriptorspec, $pipes);

if (is_resource($process)) {
    // Non-blocking read from the process
    stream_set_blocking($pipes[1], 0);
    
    // Continue with other PHP code while the C program is running
    // ...

    // Close the process
    proc_close($process);
}

Keywords

PHP C program asynchronous exec shell_exec

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