gistfile1.php

<?php
  public function pearfarm_build() {
    $tags = $this->get_tags();
    $tag = array_pop($tags);
    if($this->has_spec($tag) == false) {
      $this->cleanup();
      return false;
    }
    if($this->get_tag($tag)) {
      $specfile = $this->temp_location . '/pearfarm.spec';
      include $specfile;
      if (!isset($spec)) {
        $this->cleanup();
        return false;
      }
      $spec->writePackageFile();
      $pear_command = implode(' ', array('cd', $this->temp_location, '&&', 'pear', '-c', sys_get_temp_dir() . '/.pearrc', 'package'));
      $pear_add_channel = implode(' ', array('pear', '-c', sys_get_temp_dir() . '/.pearrc', 'channel-discover', $spec->getChannel()));
      exec($pear_add_channel, $out);
      exec($pear_command, $out2, $result);
      $file = $this->temp_location . "/{$spec->getName()}-{$spec->getReleaseVersion()}.tgz";
      return (file_exists($file)) ? $file : false;
    }else{
      $this->cleanup();
      return false;
    }
    $this->cleanup();
    return false;
	}