No such process

[sushengbuhuo]

[root@VM_0_14_centos extension]# php -r 'for ($i = 0; $i < 20; $i++) usleep(50000);' &
[2] 19248
[root@VM_0_14_centos extension]# /usr/local/php/bin/phptrace -p $!
ERROR: Process 19248 not exists "No such process(3)"
[2]+  Done                    php -r 'for ($i = 0; $i < 20; $i++) usleep(50000);'
[root@VM_0_14_centos extension]# /usr/local/php/bin/phptrace -p 19248
ERROR: Process 19248 not exists "No such process(3)"

[rahmatrh199]

@sushengbuhuo .Dear run like this

[root@VM_0_14_centos extension]# php -r 'for ($i = 0; $i < 20; $i++) usleep(50000);' &amp; phptrace -p $!

[rahmatrh199]

@sushengbuhuo
Please help me out that . Are you able to trace the application that are running on server like apache2.