Predefined Constants
The following list of signals are supported by the Process Control functions. Please see your systems signal(7) man page for details of the default behavior of these signals.
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Process Control constants
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WNOHANG
(int) -
WUNTRACED
(int)
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SIG_* constants
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SIG_IGN
(int) -
SIG_DFL
(int) -
SIG_ERR
(int) -
SIGHUP
(int) -
SIGINT
(int) -
SIGQUIT
(int) -
SIGILL
(int) -
SIGTRAP
(int) -
SIGABRT
(int) -
SIGIOT
(int) -
SIGBUS
(int) -
SIGFPE
(int) -
SIGKILL
(int) -
SIGUSR1
(int) -
SIGSEGV
(int) -
SIGUSR2
(int) -
SIGPIPE
(int) -
SIGALRM
(int) -
SIGTERM
(int) -
SIGSTKFLT
(int) -
SIGCLD
(int) -
SIGCHLD
(int) -
SIGCONT
(int) -
SIGSTOP
(int) -
SIGTSTP
(int) -
SIGTTIN
(int) -
SIGTTOU
(int) -
SIGURG
(int) -
SIGXCPU
(int) -
SIGXFSZ
(int) -
SIGVTALRM
(int) -
SIGPROF
(int) -
SIGWINCH
(int) -
SIGPOLL
(int) -
SIGIO
(int) -
SIGPWR
(int) -
SIGSYS
(int) -
SIGBABY
(int) -
SIG_BLOCK
(int) -
SIG_UNBLOCK
(int) -
SIG_SETMASK
(int)
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SI_* constants
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SI_USER
(int) -
SI_NOINFO
(int) -
SI_KERNEL
(int) -
SI_QUEUE
(int) -
SI_TIMER
(int) -
SI_MSGGQ
(int) -
SI_ASYNCIO
(int) -
SI_SIGIO
(int) -
SI_TKILL
(int)
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CLD_* constants
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CLD_EXITED
(int) -
CLD_KILLED
(int) -
CLD_DUMPED
(int) -
CLD_TRAPPED
(int) -
CLD_STOPPED
(int) -
CLD_CONTINUED
(int)
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TRAP_* constants
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TRAP_BRKPT
(int) -
TRAP_TRACE
(int)
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POLL_* constants
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POLL_IN
(int) -
POLL_OUT
(int) -
POLL_MSG
(int) -
POLL_ERR
(int) -
POLL_PRI
(int) -
POLL_HUP
(int)
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ILL_* constants
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ILL_ILLOPC
(int) -
ILL_ILLOPN
(int) -
ILL_ILLADR
(int) -
ILL_ILLTRP
(int) -
ILL_PRVOPC
(int) -
ILL_PRVREG
(int) -
ILL_COPROC
(int) -
ILL_BADSTK
(int)
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FPE_* constants
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FPE_INTDIV
(int) -
FPE_INTOVF
(int) -
FPE_FLTDIV
(int) -
FPE_FLTOVF
(int) -
FPE_FLTUND
(int) -
FPE_FLTRES
(int) -
FPE_FLTINV
(int) -
FPE_FLTSUB
(int)
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SEGV_* constants
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SEGV_MAPERR
(int) -
SEGV_ACCERR
(int)
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BUS_* constants
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BUS_ADRALN
(int) -
BUS_ADRERR
(int) -
BUS_OBJERR
(int)
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CLONE_* constants
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CLONE_NEWNS
(int) - Available as of PHP 7.4.0
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CLONE_NEWIPC
(int) - Available as of PHP 7.4.0
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CLONE_NEWUTS
(int) - Available as of PHP 7.4.0
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CLONE_NEWNET
(int) - Available as of PHP 7.4.0
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CLONE_NEWPID
(int) - Available as of PHP 7.4.0
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CLONE_NEWUSER
(int) - Available as of PHP 7.4.0
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CLONE_NEWCGROUP
(int) - Available as of PHP 7.4.0
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PRIO_* constants
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PRIO_PGRP
(int) -
PRIO_USER
(int) -
PRIO_PROCESS
(int) -
PRIO_DARWIN_BG
(int) - Available as of PHP 8.1.0.
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PRIO_DARWIN_THREAD
(int) - Available as of PHP 8.1.0.