1. class
  2. Symfony
  3. Component
  4. Process
  5. PhpProcess

PhpProcess

class PhpProcess extends Process

PhpProcess runs a PHP script in an independent process.

$p = new PhpProcess(''); $p->run(); print $p->getOutput()."\n";

Constants

ERR

OUT

STATUS_READY

STATUS_STARTED

STATUS_TERMINATED

STDIN

STDOUT

STDERR

TIMEOUT_PRECISION

Properties

static array $exitCodes Exit codes translation table. from Process

Methods

__construct(string $script, string|null $cwd = null, array $env = null, int|float|null $timeout = 60, array $options = array())

Constructor.

__destruct()

No description

from Process
__clone()

No description

from Process
int
run(callable|null $callback = null)

Runs the process.

from Process
Process
mustRun(callable $callback = null)

Runs the process.

from Process
start(callable $callback = null)

Starts the process and returns after writing the input to STDIN.

Process
restart(callable $callback = null)

Restarts the process.

from Process
int
wait(callable $callback = null)

Waits for the process to terminate.

from Process
int|null
getPid()

Returns the Pid (process identifier), if applicable.

from Process
Process
signal(int $signal)

Sends a POSIX signal to the process.

from Process
Process
disableOutput()

Disables fetching output and error output from the underlying process.

from Process
Process
enableOutput()

Enables fetching output and error output from the underlying process.

from Process
bool
isOutputDisabled()

Returns true in case the output is disabled, false otherwise.

from Process
string
getOutput()

Returns the current output of the process (STDOUT).

from Process
string
getIncrementalOutput()

Returns the output incrementally.

from Process
Process
clearOutput()

Clears the process output.

from Process
string
getErrorOutput()

Returns the current error output of the process (STDERR).

from Process
string
getIncrementalErrorOutput()

Returns the errorOutput incrementally.

from Process
Process
clearErrorOutput()

Clears the process output.

from Process
null|int
getExitCode()

Returns the exit code returned by the process.

from Process
null|string
getExitCodeText()

Returns a string representation for the exit code returned by the process.

from Process
bool
isSuccessful()

Checks if the process ended successfully.

from Process
bool
hasBeenSignaled()

Returns true if the child process has been terminated by an uncaught signal.

from Process
int
getTermSignal()

Returns the number of the signal that caused the child process to terminate its execution.

from Process
bool
hasBeenStopped()

Returns true if the child process has been stopped by a signal.

from Process
int
getStopSignal()

Returns the number of the signal that caused the child process to stop its execution.

from Process
bool
isRunning()

Checks if the process is currently running.

from Process
bool
isStarted()

Checks if the process has been started with no regard to the current state.

from Process
bool
isTerminated()

Checks if the process is terminated.

from Process
string
getStatus()

Gets the process status.

from Process
int
stop(int|float $timeout = 10, int $signal = null)

Stops the process.

from Process
addOutput(string $line)

Adds a line to the STDOUT stream.

from Process
addErrorOutput(string $line)

Adds a line to the STDERR stream.

from Process
string
getCommandLine()

Gets the command line to be executed.

from Process
Process
setCommandLine(string $commandline)

Sets the command line to be executed.

from Process
float|null
getTimeout()

Gets the process timeout (max. runtime).

from Process
float|null
getIdleTimeout()

Gets the process idle timeout (max. time since last output).

from Process
Process
setTimeout(int|float|null $timeout)

Sets the process timeout (max. runtime).

from Process
Process
setIdleTimeout(int|float|null $timeout)

Sets the process idle timeout (max. time since last output).

from Process
Process
setTty(bool $tty)

Enables or disables the TTY mode.

from Process
bool
isTty()

Checks if the TTY mode is enabled.

from Process
Process
setPty(bool $bool)

Sets PTY mode.

from Process
bool
isPty()

Returns PTY state.

from Process
string|null
getWorkingDirectory()

Gets the working directory.

from Process
Process
setWorkingDirectory(string $cwd)

Sets the current working directory.

from Process
array
getEnv()

Gets the environment variables.

from Process
Process
setEnv(array $env)

Sets the environment variables.

from Process
null|string
getInput()

Gets the Process input.

from Process
Process
setInput(mixed $input)

Sets the input.

from Process
array
getOptions()

Gets the options for proc_open.

from Process
Process
setOptions(array $options)

Sets the options for proc_open.

from Process
bool
getEnhanceWindowsCompatibility()

Gets whether or not Windows compatibility is enabled.

from Process
Process
setEnhanceWindowsCompatibility(bool $enhance)

Sets whether or not Windows compatibility is enabled.

from Process
bool
getEnhanceSigchildCompatibility()

Returns whether sigchild compatibility mode is activated or not.

from Process
Process
setEnhanceSigchildCompatibility(bool $enhance)

Activates sigchild compatibility mode.

from Process
checkTimeout()

Performs a check between the timeout definition and the time the process started.

from Process
static bool
isPtySupported()

Returns whether PTY is supported on the current operating system.

from Process
setPhpBinary($php)

Sets the path to the PHP binary to use.

Details

at line line 36
__construct(string $script, string|null $cwd = null, array $env = null, int|float|null $timeout = 60, array $options = array())

Constructor.

Parameters

string $script The PHP script to run (as a string)
string|null $cwd The working directory or null to use the working dir of the current PHP process
array $env The environment variables or null to use the same environment as the current PHP process
int|float|null $timeout The timeout in seconds or null to disable
array $options An array of options for proc_open

in Process at line line 178
__destruct()

in Process at line line 183
__clone()

in Process at line line 207
int run(callable|null $callback = null)

Runs the process.

The callback receives the type of output (out or err) and some bytes from the output in real-time. It allows to have feedback from the independent process during execution.

The STDOUT and STDERR are also available after the process is finished via the getOutput() and getErrorOutput() methods.

Parameters

callable|null $callback A PHP callback to run whenever there is some output available on STDOUT or STDERR

Return Value

int The exit status code

Exceptions

RuntimeException When process can't be launched
RuntimeException When process stopped after receiving signal
LogicException In case a callback is provided and output has been disabled

in Process at line line 227
Process mustRun(callable $callback = null)

Runs the process.

This is identical to run() except that an exception is thrown if the process exits with a non-zero exit code.

Parameters

callable $callback

Return Value

Process

Exceptions

RuntimeException if PHP was compiled with --enable-sigchild and the enhanced sigchild compatibility mode is not enabled
ProcessFailedException if the process didn't terminate successfully

at line line 64
start(callable $callback = null)

Starts the process and returns after writing the input to STDIN.

This method blocks until all STDIN data is sent to the process then it returns while the process runs in the background.

The termination of the process can be awaited with wait().

The callback receives the type of output (out or err) and some bytes from the output in real-time while writing the standard input to the process. It allows to have feedback from the independent process during execution. If there is no callback passed, the wait() method can be called with true as a second parameter then the callback will get all data occurred in (and since) the start call.

Parameters

callable $callback A PHP callback to run whenever there is some output available on STDOUT or STDERR

Exceptions

RuntimeException When process can't be launched
RuntimeException When process is already running
LogicException In case a callback is provided and output has been disabled

in Process at line line 332
Process restart(callable $callback = null)

Restarts the process.

Be warned that the process is cloned before being started.

Parameters

callable $callback A PHP callback to run whenever there is some output available on STDOUT or STDERR

Return Value

Process The new process

Exceptions

RuntimeException When process can't be launched
RuntimeException When process is already running

See also

start()

in Process at line line 359
int wait(callable $callback = null)

Waits for the process to terminate.

The callback receives the type of output (out or err) and some bytes from the output in real-time while writing the standard input to the process. It allows to have feedback from the independent process during execution.

Parameters

callable $callback A valid PHP callback

Return Value

int The exitcode of the process

Exceptions

RuntimeException When process timed out
RuntimeException When process stopped after receiving signal
LogicException When process is not yet started

in Process at line line 391
int|null getPid()

Returns the Pid (process identifier), if applicable.

Return Value

int|null The process id if running, null otherwise

in Process at line line 407
Process signal(int $signal)

Sends a POSIX signal to the process.

Parameters

int $signal A valid POSIX signal (see http://www.php.net/manual/en/pcntl.constants.php)

Return Value

Process

Exceptions

LogicException In case the process is not running
RuntimeException In case --enable-sigchild is activated and the process can't be killed
RuntimeException In case of failure

in Process at line line 422
Process disableOutput()

Disables fetching output and error output from the underlying process.

Return Value

Process

Exceptions

RuntimeException In case the process is already running
LogicException if an idle timeout is set

in Process at line line 443
Process enableOutput()

Enables fetching output and error output from the underlying process.

Return Value

Process

Exceptions

RuntimeException In case the process is already running

in Process at line line 459
bool isOutputDisabled()

Returns true in case the output is disabled, false otherwise.

Return Value

bool

in Process at line line 472
string getOutput()

Returns the current output of the process (STDOUT).

Return Value

string The process output

Exceptions

LogicException in case the output has been disabled
LogicException In case the process is not started

in Process at line line 496
string getIncrementalOutput()

Returns the output incrementally.

In comparison with the getOutput method which always return the whole output, this one returns the new output since the last call.

Return Value

string The process output since the last call

Exceptions

LogicException in case the output has been disabled
LogicException In case the process is not started

in Process at line line 518
Process clearOutput()

Clears the process output.

Return Value

Process

in Process at line line 534
string getErrorOutput()

Returns the current error output of the process (STDERR).

Return Value

string The process error output

Exceptions

LogicException in case the output has been disabled
LogicException In case the process is not started

in Process at line line 559
string getIncrementalErrorOutput()

Returns the errorOutput incrementally.

In comparison with the getErrorOutput method which always return the whole error output, this one returns the new error output since the last call.

Return Value

string The process error output since the last call

Exceptions

LogicException in case the output has been disabled
LogicException In case the process is not started

in Process at line line 581
Process clearErrorOutput()

Clears the process output.

Return Value

Process

in Process at line line 596
null|int getExitCode()

Returns the exit code returned by the process.

Return Value

null|int The exit status code, null if the Process is not terminated

Exceptions

RuntimeException In case --enable-sigchild is activated and the sigchild compatibility mode is disabled

in Process at line line 620
null|string getExitCodeText()

Returns a string representation for the exit code returned by the process.

This method relies on the Unix exit code status standardization and might not be relevant for other operating systems.

Return Value

null|string A string representation for the exit status code, null if the Process is not terminated.

See also

http://tldp.org/LDP/abs/html/exitcodes.html
http://en.wikipedia.org/wiki/Unix_signal

in Process at line line 634
bool isSuccessful()

Checks if the process ended successfully.

Return Value

bool true if the process ended successfully, false otherwise

in Process at line line 649
bool hasBeenSignaled()

Returns true if the child process has been terminated by an uncaught signal.

It always returns false on Windows.

Return Value

bool

Exceptions

RuntimeException In case --enable-sigchild is activated
LogicException In case the process is not terminated

in Process at line line 672
int getTermSignal()

Returns the number of the signal that caused the child process to terminate its execution.

It is only meaningful if hasBeenSignaled() returns true.

Return Value

int

Exceptions

RuntimeException In case --enable-sigchild is activated
LogicException In case the process is not terminated

in Process at line line 694
bool hasBeenStopped()

Returns true if the child process has been stopped by a signal.

It always returns false on Windows.

Return Value

bool

Exceptions

LogicException In case the process is not terminated

in Process at line line 710
int getStopSignal()

Returns the number of the signal that caused the child process to stop its execution.

It is only meaningful if hasBeenStopped() returns true.

Return Value

int

Exceptions

LogicException In case the process is not terminated

in Process at line line 722
bool isRunning()

Checks if the process is currently running.

Return Value

bool true if the process is currently running, false otherwise

in Process at line line 738
bool isStarted()

Checks if the process has been started with no regard to the current state.

Return Value

bool true if status is ready, false otherwise

in Process at line line 748
bool isTerminated()

Checks if the process is terminated.

Return Value

bool true if process is terminated, false otherwise

in Process at line line 762
string getStatus()

Gets the process status.

The status is one of: ready, started, terminated.

Return Value

string The current process status

in Process at line line 777
int stop(int|float $timeout = 10, int $signal = null)

Stops the process.

Parameters

int|float $timeout The timeout in seconds
int $signal A POSIX signal to send in case the process has not stop at timeout, default is SIGKILL (9)

Return Value

int The exit-code of the process

in Process at line line 807
addOutput(string $line)

Adds a line to the STDOUT stream.

Parameters

string $line The line to append

in Process at line line 818
addErrorOutput(string $line)

Adds a line to the STDERR stream.

Parameters

string $line The line to append

in Process at line line 829
string getCommandLine()

Gets the command line to be executed.

Return Value

string The command to execute

in Process at line line 841
Process setCommandLine(string $commandline)

Sets the command line to be executed.

Parameters

string $commandline The command to execute

Return Value

Process The current Process instance

in Process at line line 853
float|null getTimeout()

Gets the process timeout (max. runtime).

Return Value

float|null The timeout in seconds or null if it's disabled

in Process at line line 863
float|null getIdleTimeout()

Gets the process idle timeout (max. time since last output).

Return Value

float|null The timeout in seconds or null if it's disabled

in Process at line line 879
Process setTimeout(int|float|null $timeout)

Sets the process timeout (max. runtime).

To disable the timeout, set this value to null.

Parameters

int|float|null $timeout The timeout in seconds

Return Value

Process The current Process instance

Exceptions

InvalidArgumentException if the timeout is negative

in Process at line line 898
Process setIdleTimeout(int|float|null $timeout)

Sets the process idle timeout (max. time since last output).

To disable the timeout, set this value to null.

Parameters

int|float|null $timeout The timeout in seconds

Return Value

Process The current Process instance.

Exceptions

LogicException if the output is disabled
InvalidArgumentException if the timeout is negative

in Process at line line 918
Process setTty(bool $tty)

Enables or disables the TTY mode.

Parameters

bool $tty True to enabled and false to disable

Return Value

Process The current Process instance

Exceptions

RuntimeException In case the TTY mode is not supported

in Process at line line 937
bool isTty()

Checks if the TTY mode is enabled.

Return Value

bool true if the TTY mode is enabled, false otherwise

in Process at line line 949
Process setPty(bool $bool)

Sets PTY mode.

Parameters

bool $bool

Return Value

Process

in Process at line line 961
bool isPty()

Returns PTY state.

Return Value

bool

in Process at line line 971
string|null getWorkingDirectory()

Gets the working directory.

Return Value

string|null The current working directory or null on failure

in Process at line line 989
Process setWorkingDirectory(string $cwd)

Sets the current working directory.

Parameters

string $cwd The new working directory

Return Value

Process The current Process instance

in Process at line line 1001
array getEnv()

Gets the environment variables.

Return Value

array The current environment variables

in Process at line line 1019
Process setEnv(array $env)

Sets the environment variables.

An environment variable value should be a string. If it is an array, the variable is ignored.

That happens in PHP when 'argv' is registered into the $_ENV array for instance.

Parameters

array $env The new environment variables

Return Value

Process The current Process instance

in Process at line line 1039
null|string getInput()

Gets the Process input.

Return Value

null|string The Process input

in Process at line line 1055
Process setInput(mixed $input)

Sets the input.

This content will be passed to the underlying process standard input.

Parameters

mixed $input The content

Return Value

Process The current Process instance

Exceptions

LogicException In case the process is running

in Process at line line 1071
array getOptions()

Gets the options for proc_open.

Return Value

array The current options

in Process at line line 1083
Process setOptions(array $options)

Sets the options for proc_open.

Parameters

array $options The new options

Return Value

Process The current Process instance

in Process at line line 1097
bool getEnhanceWindowsCompatibility()

Gets whether or not Windows compatibility is enabled.

This is true by default.

Return Value

bool

in Process at line line 1109
Process setEnhanceWindowsCompatibility(bool $enhance)

Sets whether or not Windows compatibility is enabled.

Parameters

bool $enhance

Return Value

Process The current Process instance

in Process at line line 1121
bool getEnhanceSigchildCompatibility()

Returns whether sigchild compatibility mode is activated or not.

Return Value

bool

in Process at line line 1137
Process setEnhanceSigchildCompatibility(bool $enhance)

Activates sigchild compatibility mode.

Sigchild compatibility mode is required to get the exit code and determine the success of a process when PHP has been compiled with the --enable-sigchild option

Parameters

bool $enhance

Return Value

Process The current Process instance

in Process at line line 1152
checkTimeout()

Performs a check between the timeout definition and the time the process started.

In case you run a background process (with the start method), you should trigger this method regularly to ensure the process timeout

Exceptions

ProcessTimedOutException In case the timeout was reached

in Process at line line 1176
static bool isPtySupported()

Returns whether PTY is supported on the current operating system.

Return Value

bool

at line line 56
setPhpBinary($php)

Sets the path to the PHP binary to use.

Parameters

$php