www.gusucode.com > Piwik 网站流量统计系统 v2.9.1PHP源码程序 > Piwik 网站流量统计系统 v2.9.1/piwik/piwik/core/DataTable/Filter/ColumnCallbackAddColumn.php
<?php /** * Piwik - free/libre analytics platform * * @link http://piwik.org * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later * */ namespace Piwik\DataTable\Filter; use Piwik\DataTable; use Piwik\DataTable\BaseFilter; /** * Adds a new column to every row of a {@link DataTable} based on the result of callback. * * **Basic usage example** * * $callback = function ($visits, $timeSpent) { * return round($timeSpent / $visits, 2); * }; * * $dataTable->filter('ColumnCallbackAddColumn', array(array('nb_visits', 'sum_time_spent'), 'avg_time_on_site', $callback)); * * @api */ class ColumnCallbackAddColumn extends BaseFilter { /** * The names of the columns to pass to the callback. */ private $columns; /** * The name of the column to add. */ private $columnToAdd; /** * The callback to apply to each row of the DataTable. The result is added as * the value of a new column. */ private $functionToApply; /** * Extra parameters to pass to the callback. */ private $functionParameters; /** * Constructor. * * @param DataTable $table The DataTable that will be filtered. * @param array|string $columns The names of the columns to pass to the callback. * @param string $columnToAdd The name of the column to add. * @param callable $functionToApply The callback to apply to each row of a DataTable. The columns * specified in `$columns` are passed to this callback. * @param array $functionParameters deprecated - use an [anonymous function](http://php.net/manual/en/functions.anonymous.php) * instead. */ public function __construct($table, $columns, $columnToAdd, $functionToApply, $functionParameters = array()) { parent::__construct($table); if (!is_array($columns)) { $columns = array($columns); } $this->columns = $columns; $this->columnToAdd = $columnToAdd; $this->functionToApply = $functionToApply; $this->functionParameters = $functionParameters; } /** * See {@link ColumnCallbackAddColumn}. * * @param DataTable $table The table to filter. */ public function filter($table) { $columns = $this->columns; $functionParams = $this->functionParameters; $functionToApply = $this->functionToApply; foreach ($table->getRows() as $row) { $row->setColumn($this->columnToAdd, function (DataTable\Row $row) use ($columns, $functionParams, $functionToApply) { $columnValues = array(); foreach ($columns as $column) { $columnValues[] = $row->getColumn($column); } $parameters = array_merge($columnValues, $functionParams); return call_user_func_array($functionToApply, $parameters); }); $this->filterSubTable($row); } } }