Skip to content

Instantly share code, notes, and snippets.

@keeguon

keeguon/Process.class.php

Created March 14, 2011 20:48
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save keeguon/869846 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save keeguon/869846 to your computer and use it in GitHub Desktop.
Download ZIP

Revisions

  1. keeguon created this gist Mar 14, 2011.
    124 changes: 124 additions & 0 deletions Process.class.php
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,124 @@
    <?php

    class Process
    {
    protected
    $command = '',
    $outputFile = '',
    $pidFile = ''
    ;

    public function __construct($command, $outputFile, $pidFile)
    {
    $this->setCommand($command);
    $this->setOutputFile($outputFile);
    $this->setPidFile($pidFile);
    }

    /**
    * Get the command
    *
    * @return string The command
    */
    public function getCommand()
    {
    return $this->command;
    }

    /**
    * Set the command
    *
    * @param string $command The command
    */
    public function setCommand($command)
    {
    $this->command = $command;
    }

    /**
    * Get the output file location
    *
    * @return string The output file location
    */
    public function getOutputFile()
    {
    return $this->outputFile;
    }

    /**
    * Set the output file
    *
    * @param string $outputFile The output file location
    */
    public function setOutputFile($outputFile)
    {
    $this->outputFile = $outputFile;
    }

    /**
    * Get the pid file location
    *
    * @return string The pid file location
    */
    public function getPidFile()
    {
    return $this->pidFile;
    }

    /**
    * Set the pid file
    *
    * @param string $pidFile The pid file location
    */
    public function setPidFile($pidFile)
    {
    $this->pidFile = $pidFile;
    }

    /**
    * Execute the process
    */
    public function exec()
    {
    exec(sprintf("%s > %s 2>&1 & echo $! >> %s", $this->command, $this->outputFile, $this->pidFile));
    }

    /**
    * Read the PID of the process
    *
    * @return integer $pid The PID of the process
    */
    public function readPid()
    {
    $file = file($this->pidFile, FILE_SKIP_EMPTY_LINES);
    $pid = $file[count($file) - 1];
    return (int)$pid;
    }

    /**
    * Find out if the process is running
    *
    * @return boolean
    */
    public function isRunning()
    {
    try {
    $result = shell_exec(sprintf("ps %d", $this->readPid()));
    if (count(preg_split("/\n/", $result)) > 2) return true;
    } catch (Exception $e) {
    echo ($e->getMessage());
    }

    return false;
    }

    /**
    * Kill process if running
    */
    public function kill()
    {
    if ($this->isRunning()) {
    $result = shell_exec(sprintf("kill -9 %d", $this->readPid()));
    }
    }
    }