PHP Popen after waiting for the script to be executed before execution down, how to solve?

After I used Pclose (Popen ()) in PHP, I waited for the script running Popen to run to finish before proceeding down.

//test.phppclose(popen('php '.__DIR__.'/index.php','r'));$fp = fopen('product.txt', 'cb');if(flock($fp, LOCK_EX | LOCK_NB)){    echo "ok
";}else{    echo "no
";}fclose($fp);

//index.phpsleep(10);set_time_limit(0);$fp = fopen('product.txt', 'cb');flock($fp, LOCK_EX | LOCK_NB);for($i = 10 ; $i ;$i--){    fwrite($fp,$i."\n");    sleep(6);}fclose($fp);

The 2nd line of code in the test.php waits until the index.php execution is finished before it starts to run, excuse me.

Reply content:

After I used Pclose (Popen ()) in PHP, I waited for the script running Popen to run to finish before proceeding down.

//test.phppclose(popen('php '.__DIR__.'/index.php','r'));$fp = fopen('product.txt', 'cb');if(flock($fp, LOCK_EX | LOCK_NB)){    echo "ok
";}else{    echo "no
";}fclose($fp);

//index.phpsleep(10);set_time_limit(0);$fp = fopen('product.txt', 'cb');flock($fp, LOCK_EX | LOCK_NB);for($i = 10 ; $i ;$i--){    fwrite($fp,$i."\n");    sleep(6);}fclose($fp);

The 2nd line of code in the test.php waits until the index.php execution is finished before it starts to run, excuse me.

pclose(popen('nohup ' . $cmd . ' & 2>&1', 'r'));

pclose(popen('php /path/to/task.php &', 'r'));Where & is put into the background to execute script task.php.
Also note that if(flock($fp,LOCK_EX)) it will block to get an exclusive lock.

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