GunnarEriksson / chtmltable

src/HTMLTable/CHTMLTable.php

Indentation +456 added lines, -456 removed lines

@@ -17,460 +17,460 @@
  */
 class CHTMLTable
 {
-    const FOOTER = 'footer';
-
-    private $tableSpec;
-    private $tableHead;
-    private $tableBody;
-    private $tableFoot;
-
-    /**
-     * Constructor
-     *
-     * Creates a table with table head, table body and if specified, a table
-     * footer. It is possible to specify the table and the tabel cells settings
-     * per column.
-     *
-     * @param string[] $tableSpecs  table settings.
-     * @param mixed[] $data         table cell data.
-     * @param mixed[] $columnSpecs  table columns cell settings.
-     */
-    public function __construct($tableSpecs = [], $data = [], $columnSpecs = [])
-    {
-        $this->create($tableSpecs, $data, $columnSpecs);
-    }
-
-    /**
-     * Creates a table with cell data.
-     *
-     * Creates a table with table head, table body with table data and if
-     * specified, a table footer. It is possible to specify the table and the
-     * tabel cells settings per column.
-     *
-     * @param string[] $tableSpecs  table settings.
-     * @param mixed[] $data         table cell data.
-     * @param mixed[] $columnSpecs  table columns cell settings.
-     *
-     * @return object the html table object.
-     */
-    public function create($tableSpecs = [], $data = [], $columnSpecs = [])
-    {
-        $this->resetTableTags();
-        $this->setTableSpecifications($tableSpecs);
-
-        $this->createTableHead($data, $columnSpecs);
-        $this->createTableBody($data, $columnSpecs);
-        $this->createTableFooter($columnSpecs);
-
-        return $this;
-    }
-
-    /**
-     * Helper method to reset main parts of table tags.
-     *
-     * Sets the table head, table body and table foot tag to null.
-     *
-     * @return void
-     */
-    private function resetTableTags()
-    {
-        $this->tableHead = null;
-        $this->tableBody = null;
-        $this->tableFoot = null;
-    }
-
-    /**
-     * Helper method to set the table specifications.
-     *
-     * Merges the table specifications with the default specifications.
-     * Default table CSS id is html-table.
-     *
-     * @param  string[] $tableSpec the table specification.
-     *
-     * @return void
-     */
-    private function setTableSpecifications($tableSpec)
-    {
-        $defaults = [
-            // Always have a id for the form
-            'id' => 'html-table',
-        ];
-
-        if ($this->isClassPresent($tableSpec)) {
-            $tableSpec = $this->removeId($tableSpec);
-        }
-
-        $this->tableSpec = array_merge($defaults, $tableSpec);
-    }
-
-    /**
-     * Helper method to check if a CSS class tag is present
-     *
-     * Checks if a CSS class tag is present in the table specification.
-     *
-     * @param  string[] $tableSpec the table specification.
-     *
-     * @return boolean  true if class is present in the table specification,
-     *                  false otherwise.
-     */
-    private function isClassPresent($tableSpec)
-    {
-        return isset($tableSpec['class']) ? true : false;
-    }
-
-    /**
-     * Helper method to reset the id tag.
-     *
-     * Sets the CSS id tag to null.
-     *
-     * @param  string[] $tableSpec the table specification.
-     *
-     * @return string[] the table specification without the CSS id tag.
-     */
-    private function removeId($tableSpec) {
-        $tableSpec['id'] = null;
-
-        return $tableSpec;
-    }
-
-    /**
-     * Helper method to create the table head.
-     *
-     * Creates the table head. The title of the columns are set according to
-     * the table tag in the column specifications. Otherwise, the title is set
-     * to the keys name in the table cell data array.
-     *
-     * @param  mixed[]  $data        table cell data.
-     * @param  mixed[]  $columnSpecs table columns cell settings.
-     *
-     * @return void
-     */
-    private function createTableHead($data, $columnSpecs)
-    {
-        $this->tableHead = "\n<thead>";
-        $this->tableHead .= "\n<tr>";
-
-        if (empty($columnSpecs))
-        {
-            $this->setColumnTitlesFromData($data);
-        } else {
-            $this->setColumnTitlesFromColumnSpecifications($columnSpecs);
-        }
-
-        $this->tableHead .= "\n</tr>";
-        $this->tableHead .= "\n</thead>";
-    }
-
-    /**
-     * Helper method to set the column titles from the data array.
-     *
-     * Uses the first row in the table cell data array to set the titles of
-     * the columns. The name of the columns are the key name in the associative
-     * array containing data for the table.
-     *
-     * @param  mixed[]  $data   table cell data.
-     *
-     * @return void
-     */
-    private function setColumnTitlesFromData($data)
-    {
-        $firstRow = isset($data[0]) ? $data[0] : [];
-        foreach ($firstRow as $key => $value) {
-            $this->tableHead .= "\n<th>";
-            $this->tableHead .= $key;
-            $this->tableHead .= "</th>";
-        }
-    }
-
-    /**
-     * Helper method to set the column titles from column specifications.
-     *
-     * Uses column specifications to set the name of the columns in the table
-     * head.
-     *
-     * @param  mixed[]  $columnSpecs    table columns cell settings
-     *
-     * @return void
-     */
-    private function setColumnTitlesFromColumnSpecifications($columnSpecs)
-    {
-        foreach ($columnSpecs as $key => $columnSpec) {
-            if (!$this->isTableFooter($columnSpec)) {
-                $this->tableHead .= "\n<th>";
-                $this->tableHead .= $this->getTitle($key, $columnSpec);
-                $this->tableHead .= "</th>";
-            }
-        }
-    }
-
-    /**
-     * Helper method to check if the column cell belongs to the footer.
-     *
-     * Checks the type tag, in the column specification for one column, if the
-     * tag is present and set to footer.
-     *
-     * @param  mixed[]  $columnSpec cell settings for one column.
-     *
-     * @return boolean true if the cell type belongs to the footer, false otherwise.
-     */
-    private function isTableFooter($columnSpec)
-    {
-        $isFooter = false;
-        if (isset($columnSpec['type'])) {
-            if (strcmp($columnSpec['type'], self::FOOTER) === 0) {
-                $isFooter = true;
-            }
-        }
-
-        return $isFooter;
-    }
-
-    /**
-     * Helper method to get title from a column specification, if specified.
-     *
-     * Uses the title tag in the column specification for one column to get
-     * the title. If the title tag is not set, the title is the key name in
-     * the associative array containing data for the table.
-     *
-     * @param  array<integer,string>    $key        the name of the key for the
-     *                                              table cell data.
-     * @param  mixed[]                  $columnSpec cell settings for one column.
-     *
-     * @return string[] the name from the title tag in the cell specification.
-     *                  Otherwise, the table cell data key name.
-     */
-    private function getTitle($key, $columnSpec)
-    {
-        return isset($columnSpec['title']) ? $columnSpec['title'] : $key;
-    }
-
-    /**
-     * Helper method to create the table body with table cell data.
-     *
-     * Sets the table cell data in the table body.
-     *
-     * @param  mixed[] $data        table cell data.
-     * @param  mixed[] $columnSpecs table columns cell settings.
-     *
-     * @return void
-     */
-    private function createTableBody($data, $columnSpecs)
-    {
-        $this->setTableData($data, $columnSpecs);
-        if (isset($this->tableBody)) {
-            $this->tableBody = "\n<tbody>" . $this->tableBody . "\n</tbody>";
-        }
-    }
-
-    /**
-     * Helper method to set table data in table body.
-     *
-     * Sets table data according to the column specifications, if it is
-     * specified. Otherwise it sets the data as it is stored in the data array.
-     *
-     * @param  mixed[] $data        table cell data.
-     * @param  mixed[] $columnSpecs table columns cell settings.
-     *
-     * @return void
-     */
-    private function setTableData($data, $columnSpecs)
-    {
-        if (empty($columnSpecs)) {
-            $this->setTableDataFromData($data);
-        } else {
-            $this->setTableDataAsSpecified($data, $columnSpecs);
-        }
-    }
-
-    /**
-     * Helper method to set table data from the data array.
-     *
-     * Sets table data from the data array.
-     *
-     * @param  mixed[]  $data   table cell data.
-     *
-     * @return void
-     */
-    private function setTableDataFromData($data)
-    {
-        foreach ($data as $row) {
-            $this->tableBody .= "\n<tr>";
-            foreach ($row as $value) {
-                $this->tableBody .= "\n<td>";
-                $this->tableBody .= $value;
-                $this->tableBody .= "</td>";
-            }
-            $this->tableBody .= "\n</tr>";
-        }
-    }
-
-    /**
-     * Helper method to set table data according to the column specifications.
-     *
-     * Sets the table data according to the column specifications, if the cell
-     * does not belong to the footer. Adds a colspan tag, if it is specified
-     * for the cell in the column.
-     *
-     * @param  mixed[] $data         table cell data.
-     * @param  mixed[] $columnSpecs  table columns cell settings.
-     *
-     * @return void
-     */
-    private function setTableDataAsSpecified($data, $columnSpecs)
-    {
-        foreach ($data as $row) {
-            $this->tableBody .= "\n<tr>";
-            foreach ($columnSpecs as $key => $columnSpec) {
-                if (!$this->isTableFooter($columnSpec)) {
-                    $colspan = $this->getColspan($columnSpec);
-                    $this->tableBody .= "\n<td{$colspan}>";
-                    $this->tableBody .= $this->getValue($row, $key, $columnSpec);
-                    $this->tableBody .= "</td>";
-                }
-            }
-            $this->tableBody .= "\n</tr>";
-        }
-    }
-
-    /**
-     * Helper method to get the colspan value, if specified in the column
-     * specification for the cell.
-     *
-     * @param  mixed[]  $columnSpec cell settings for one column.
-     *
-     * @return int the colspan value if specified. Otherwise null.
-     */
-    private function getColspan($columnSpec)
-    {
-        return isset($columnSpec['colspan']) ? " colspan='{$columnSpec['colspan']}'" : null;
-    }
-
-    /**
-     * Helper method to get the value for a specific position in one row in
-     * the data array.
-     *
-     * Gets the data from a specific position in one row in the data array.
-     * If a function is specified for the cell in the column, the data is
-     * runned through the function before it is returned.
-     *
-     * @param  mixed[]  $row        one row of in the array of table data.
-     * @param  string   $key        the name of the key in the associative data array.
-     * @param  mixed[]  $columnSpec cell settings for one column.
-     */
-    private function getValue($row, $key, $columnSpec)
-    {
-        if ($this->isFunctionSpecified($columnSpec)) {
-            $dataValue = isset($row[$key]) ? $row[$key] : "";
-            return $this->getValueThroughFunction($columnSpec, $dataValue);
-        } else {
-            return isset($row[$key]) ? $row[$key] : "";
-        }
-    }
-
-    /**
-     * Helper method t check if the function tag is specified for the cells in
-     * one column.
-     *
-     * Checks if the function tag is set for the cell in one column.
-     *
-     * @param  mixed[]  $columnSpec     cell settings for one column.
-     *
-     * @return boolean true if a function is connected to the cell, false otherwise.
-     */
-    private function isFunctionSpecified($columnSpec)
-    {
-        return isset($columnSpec['function']) ? true : false;
-    }
-
-    /**
-     * Helper method to run the value through a function before it is returned.
-     *
-     * Runs the value through a function, if a function is connected to the cell
-     * in the column. If not function is connected to the cell through the
-     * column specification, the value is returned as it is.
-     *
-     * @param mixed[]   $columnSpec     cell settings for one column
-     * @param mixed     $dataValue      the value to run through function, if specified.
-     *
-     * @return the value.
-     */
-    private function getValueThroughFunction($columnSpec, $dataValue)
-    {
-        if (!empty($columnSpec['function'])) {
-            return call_user_func($columnSpec['function'], $dataValue);
-        } else {
-            return $dataValue;
-        }
-    }
-
-    /**
-     * Helper method to create table footer with data.
-     *
-     * Creates table footer if the cell settings for the column is set to
-     * footer in the column specifications.
-     * Adds a colspan tag, if it is specified for the cell in the column.
-     *
-     * @param  mixed[] $columnSpecs table columns cell settings.
-     *
-     * @return void
-     */
-    private function createTableFooter($columnSpecs)
-    {
-        foreach ($columnSpecs as $columnSpec) {
-            if ($this->isTableFooter($columnSpec)) {
-                $colspan = $this->getColspan($columnSpec);
-                $this->tableFoot .= "\n<td{$colspan}>";
-                $this->tableFoot .= $this->getFooterData($columnSpec);
-                $this->tableFoot .= "</td>";
-            }
-        }
-
-        if (isset($this->tableFoot)) {
-            $this->tableFoot = "\n<tfoot>\n<tr>" . $this->tableFoot . "\n</tr>\n</tfoot>";
-        }
-    }
-
-    /**
-     * Helper method to get table footer data.
-     *
-     * Gets table footer data from the column specification. Checks if the
-     * value should be fetched from a function or from the value tag.
-     * If either the function or the value specified, an empty string is
-     * returned.
-     *
-     * @param  mixed[] $columnSpec  cell settings for one column.
-     *
-     * @return mixed    the cell data value.
-     */
-    private function getFooterData($columnSpec)
-    {
-        if ($this->isFunctionSpecified($columnSpec)) {
-            return call_user_func($columnSpec['function']);
-        } else {
-            return isset($columnSpec['value']) ? $columnSpec['value'] : "";
-        }
-    }
-
-    /**
-     * Gets the table.
-     *
-     * Gets the table with table data.
-     *
-     * @return html     the table with table data.
-     */
-    public function getHTMLTable()
-    {
-        $id = isset($this->tableSpec['id']) ? " id='{$this->tableSpec['id']}'" : null;
-        $class = isset($this->tableSpec['class']) ? " class='{$this->tableSpec['class']}'" : null;
-        $caption = isset($this->tableSpec['caption']) ? "<caption>{$this->tableSpec['caption']}</caption>" : null;
-
-        $htmlTable = "<table{$id}{$class}>";
-        $htmlTable .= $caption;
-        $htmlTable .= $this->tableHead;
-        $htmlTable .= $this->tableBody;
-        $htmlTable .= $this->tableFoot;
-        $htmlTable .= "\n</table>";
-
-        return $htmlTable;
-    }
+	const FOOTER = 'footer';
+
+	private $tableSpec;
+	private $tableHead;
+	private $tableBody;
+	private $tableFoot;
+
+	/**
+	 * Constructor
+	 *
+	 * Creates a table with table head, table body and if specified, a table
+	 * footer. It is possible to specify the table and the tabel cells settings
+	 * per column.
+	 *
+	 * @param string[] $tableSpecs  table settings.
+	 * @param mixed[] $data         table cell data.
+	 * @param mixed[] $columnSpecs  table columns cell settings.
+	 */
+	public function __construct($tableSpecs = [], $data = [], $columnSpecs = [])
+	{
+		$this->create($tableSpecs, $data, $columnSpecs);
+	}
+
+	/**
+	 * Creates a table with cell data.
+	 *
+	 * Creates a table with table head, table body with table data and if
+	 * specified, a table footer. It is possible to specify the table and the
+	 * tabel cells settings per column.
+	 *
+	 * @param string[] $tableSpecs  table settings.
+	 * @param mixed[] $data         table cell data.
+	 * @param mixed[] $columnSpecs  table columns cell settings.
+	 *
+	 * @return object the html table object.
+	 */
+	public function create($tableSpecs = [], $data = [], $columnSpecs = [])
+	{
+		$this->resetTableTags();
+		$this->setTableSpecifications($tableSpecs);
+
+		$this->createTableHead($data, $columnSpecs);
+		$this->createTableBody($data, $columnSpecs);
+		$this->createTableFooter($columnSpecs);
+
+		return $this;
+	}
+
+	/**
+	 * Helper method to reset main parts of table tags.
+	 *
+	 * Sets the table head, table body and table foot tag to null.
+	 *
+	 * @return void
+	 */
+	private function resetTableTags()
+	{
+		$this->tableHead = null;
+		$this->tableBody = null;
+		$this->tableFoot = null;
+	}
+
+	/**
+	 * Helper method to set the table specifications.
+	 *
+	 * Merges the table specifications with the default specifications.
+	 * Default table CSS id is html-table.
+	 *
+	 * @param  string[] $tableSpec the table specification.
+	 *
+	 * @return void
+	 */
+	private function setTableSpecifications($tableSpec)
+	{
+		$defaults = [
+			// Always have a id for the form
+			'id' => 'html-table',
+		];
+
+		if ($this->isClassPresent($tableSpec)) {
+			$tableSpec = $this->removeId($tableSpec);
+		}
+
+		$this->tableSpec = array_merge($defaults, $tableSpec);
+	}
+
+	/**
+	 * Helper method to check if a CSS class tag is present
+	 *
+	 * Checks if a CSS class tag is present in the table specification.
+	 *
+	 * @param  string[] $tableSpec the table specification.
+	 *
+	 * @return boolean  true if class is present in the table specification,
+	 *                  false otherwise.
+	 */
+	private function isClassPresent($tableSpec)
+	{
+		return isset($tableSpec['class']) ? true : false;
+	}
+
+	/**
+	 * Helper method to reset the id tag.
+	 *
+	 * Sets the CSS id tag to null.
+	 *
+	 * @param  string[] $tableSpec the table specification.
+	 *
+	 * @return string[] the table specification without the CSS id tag.
+	 */
+	private function removeId($tableSpec) {
+		$tableSpec['id'] = null;
+
+		return $tableSpec;
+	}
+
+	/**
+	 * Helper method to create the table head.
+	 *
+	 * Creates the table head. The title of the columns are set according to
+	 * the table tag in the column specifications. Otherwise, the title is set
+	 * to the keys name in the table cell data array.
+	 *
+	 * @param  mixed[]  $data        table cell data.
+	 * @param  mixed[]  $columnSpecs table columns cell settings.
+	 *
+	 * @return void
+	 */
+	private function createTableHead($data, $columnSpecs)
+	{
+		$this->tableHead = "\n<thead>";
+		$this->tableHead .= "\n<tr>";
+
+		if (empty($columnSpecs))
+		{
+			$this->setColumnTitlesFromData($data);
+		} else {
+			$this->setColumnTitlesFromColumnSpecifications($columnSpecs);
+		}
+
+		$this->tableHead .= "\n</tr>";
+		$this->tableHead .= "\n</thead>";
+	}
+
+	/**
+	 * Helper method to set the column titles from the data array.
+	 *
+	 * Uses the first row in the table cell data array to set the titles of
+	 * the columns. The name of the columns are the key name in the associative
+	 * array containing data for the table.
+	 *
+	 * @param  mixed[]  $data   table cell data.
+	 *
+	 * @return void
+	 */
+	private function setColumnTitlesFromData($data)
+	{
+		$firstRow = isset($data[0]) ? $data[0] : [];
+		foreach ($firstRow as $key => $value) {
+			$this->tableHead .= "\n<th>";
+			$this->tableHead .= $key;
+			$this->tableHead .= "</th>";
+		}
+	}
+
+	/**
+	 * Helper method to set the column titles from column specifications.
+	 *
+	 * Uses column specifications to set the name of the columns in the table
+	 * head.
+	 *
+	 * @param  mixed[]  $columnSpecs    table columns cell settings
+	 *
+	 * @return void
+	 */
+	private function setColumnTitlesFromColumnSpecifications($columnSpecs)
+	{
+		foreach ($columnSpecs as $key => $columnSpec) {
+			if (!$this->isTableFooter($columnSpec)) {
+				$this->tableHead .= "\n<th>";
+				$this->tableHead .= $this->getTitle($key, $columnSpec);
+				$this->tableHead .= "</th>";
+			}
+		}
+	}
+
+	/**
+	 * Helper method to check if the column cell belongs to the footer.
+	 *
+	 * Checks the type tag, in the column specification for one column, if the
+	 * tag is present and set to footer.
+	 *
+	 * @param  mixed[]  $columnSpec cell settings for one column.
+	 *
+	 * @return boolean true if the cell type belongs to the footer, false otherwise.
+	 */
+	private function isTableFooter($columnSpec)
+	{
+		$isFooter = false;
+		if (isset($columnSpec['type'])) {
+			if (strcmp($columnSpec['type'], self::FOOTER) === 0) {
+				$isFooter = true;
+			}
+		}
+
+		return $isFooter;
+	}
+
+	/**
+	 * Helper method to get title from a column specification, if specified.
+	 *
+	 * Uses the title tag in the column specification for one column to get
+	 * the title. If the title tag is not set, the title is the key name in
+	 * the associative array containing data for the table.
+	 *
+	 * @param  array<integer,string>    $key        the name of the key for the
+	 *                                              table cell data.
+	 * @param  mixed[]                  $columnSpec cell settings for one column.
+	 *
+	 * @return string[] the name from the title tag in the cell specification.
+	 *                  Otherwise, the table cell data key name.
+	 */
+	private function getTitle($key, $columnSpec)
+	{
+		return isset($columnSpec['title']) ? $columnSpec['title'] : $key;
+	}
+
+	/**
+	 * Helper method to create the table body with table cell data.
+	 *
+	 * Sets the table cell data in the table body.
+	 *
+	 * @param  mixed[] $data        table cell data.
+	 * @param  mixed[] $columnSpecs table columns cell settings.
+	 *
+	 * @return void
+	 */
+	private function createTableBody($data, $columnSpecs)
+	{
+		$this->setTableData($data, $columnSpecs);
+		if (isset($this->tableBody)) {
+			$this->tableBody = "\n<tbody>" . $this->tableBody . "\n</tbody>";
+		}
+	}
+
+	/**
+	 * Helper method to set table data in table body.
+	 *
+	 * Sets table data according to the column specifications, if it is
+	 * specified. Otherwise it sets the data as it is stored in the data array.
+	 *
+	 * @param  mixed[] $data        table cell data.
+	 * @param  mixed[] $columnSpecs table columns cell settings.
+	 *
+	 * @return void
+	 */
+	private function setTableData($data, $columnSpecs)
+	{
+		if (empty($columnSpecs)) {
+			$this->setTableDataFromData($data);
+		} else {
+			$this->setTableDataAsSpecified($data, $columnSpecs);
+		}
+	}
+
+	/**
+	 * Helper method to set table data from the data array.
+	 *
+	 * Sets table data from the data array.
+	 *
+	 * @param  mixed[]  $data   table cell data.
+	 *
+	 * @return void
+	 */
+	private function setTableDataFromData($data)
+	{
+		foreach ($data as $row) {
+			$this->tableBody .= "\n<tr>";
+			foreach ($row as $value) {
+				$this->tableBody .= "\n<td>";
+				$this->tableBody .= $value;
+				$this->tableBody .= "</td>";
+			}
+			$this->tableBody .= "\n</tr>";
+		}
+	}
+
+	/**
+	 * Helper method to set table data according to the column specifications.
+	 *
+	 * Sets the table data according to the column specifications, if the cell
+	 * does not belong to the footer. Adds a colspan tag, if it is specified
+	 * for the cell in the column.
+	 *
+	 * @param  mixed[] $data         table cell data.
+	 * @param  mixed[] $columnSpecs  table columns cell settings.
+	 *
+	 * @return void
+	 */
+	private function setTableDataAsSpecified($data, $columnSpecs)
+	{
+		foreach ($data as $row) {
+			$this->tableBody .= "\n<tr>";
+			foreach ($columnSpecs as $key => $columnSpec) {
+				if (!$this->isTableFooter($columnSpec)) {
+					$colspan = $this->getColspan($columnSpec);
+					$this->tableBody .= "\n<td{$colspan}>";
+					$this->tableBody .= $this->getValue($row, $key, $columnSpec);
+					$this->tableBody .= "</td>";
+				}
+			}
+			$this->tableBody .= "\n</tr>";
+		}
+	}
+
+	/**
+	 * Helper method to get the colspan value, if specified in the column
+	 * specification for the cell.
+	 *
+	 * @param  mixed[]  $columnSpec cell settings for one column.
+	 *
+	 * @return int the colspan value if specified. Otherwise null.
+	 */
+	private function getColspan($columnSpec)
+	{
+		return isset($columnSpec['colspan']) ? " colspan='{$columnSpec['colspan']}'" : null;
+	}
+
+	/**
+	 * Helper method to get the value for a specific position in one row in
+	 * the data array.
+	 *
+	 * Gets the data from a specific position in one row in the data array.
+	 * If a function is specified for the cell in the column, the data is
+	 * runned through the function before it is returned.
+	 *
+	 * @param  mixed[]  $row        one row of in the array of table data.
+	 * @param  string   $key        the name of the key in the associative data array.
+	 * @param  mixed[]  $columnSpec cell settings for one column.
+	 */
+	private function getValue($row, $key, $columnSpec)
+	{
+		if ($this->isFunctionSpecified($columnSpec)) {
+			$dataValue = isset($row[$key]) ? $row[$key] : "";
+			return $this->getValueThroughFunction($columnSpec, $dataValue);
+		} else {
+			return isset($row[$key]) ? $row[$key] : "";
+		}
+	}
+
+	/**
+	 * Helper method t check if the function tag is specified for the cells in
+	 * one column.
+	 *
+	 * Checks if the function tag is set for the cell in one column.
+	 *
+	 * @param  mixed[]  $columnSpec     cell settings for one column.
+	 *
+	 * @return boolean true if a function is connected to the cell, false otherwise.
+	 */
+	private function isFunctionSpecified($columnSpec)
+	{
+		return isset($columnSpec['function']) ? true : false;
+	}
+
+	/**
+	 * Helper method to run the value through a function before it is returned.
+	 *
+	 * Runs the value through a function, if a function is connected to the cell
+	 * in the column. If not function is connected to the cell through the
+	 * column specification, the value is returned as it is.
+	 *
+	 * @param mixed[]   $columnSpec     cell settings for one column
+	 * @param mixed     $dataValue      the value to run through function, if specified.
+	 *
+	 * @return the value.
+	 */
+	private function getValueThroughFunction($columnSpec, $dataValue)
+	{
+		if (!empty($columnSpec['function'])) {
+			return call_user_func($columnSpec['function'], $dataValue);
+		} else {
+			return $dataValue;
+		}
+	}
+
+	/**
+	 * Helper method to create table footer with data.
+	 *
+	 * Creates table footer if the cell settings for the column is set to
+	 * footer in the column specifications.
+	 * Adds a colspan tag, if it is specified for the cell in the column.
+	 *
+	 * @param  mixed[] $columnSpecs table columns cell settings.
+	 *
+	 * @return void
+	 */
+	private function createTableFooter($columnSpecs)
+	{
+		foreach ($columnSpecs as $columnSpec) {
+			if ($this->isTableFooter($columnSpec)) {
+				$colspan = $this->getColspan($columnSpec);
+				$this->tableFoot .= "\n<td{$colspan}>";
+				$this->tableFoot .= $this->getFooterData($columnSpec);
+				$this->tableFoot .= "</td>";
+			}
+		}
+
+		if (isset($this->tableFoot)) {
+			$this->tableFoot = "\n<tfoot>\n<tr>" . $this->tableFoot . "\n</tr>\n</tfoot>";
+		}
+	}
+
+	/**
+	 * Helper method to get table footer data.
+	 *
+	 * Gets table footer data from the column specification. Checks if the
+	 * value should be fetched from a function or from the value tag.
+	 * If either the function or the value specified, an empty string is
+	 * returned.
+	 *
+	 * @param  mixed[] $columnSpec  cell settings for one column.
+	 *
+	 * @return mixed    the cell data value.
+	 */
+	private function getFooterData($columnSpec)
+	{
+		if ($this->isFunctionSpecified($columnSpec)) {
+			return call_user_func($columnSpec['function']);
+		} else {
+			return isset($columnSpec['value']) ? $columnSpec['value'] : "";
+		}
+	}
+
+	/**
+	 * Gets the table.
+	 *
+	 * Gets the table with table data.
+	 *
+	 * @return html     the table with table data.
+	 */
+	public function getHTMLTable()
+	{
+		$id = isset($this->tableSpec['id']) ? " id='{$this->tableSpec['id']}'" : null;
+		$class = isset($this->tableSpec['class']) ? " class='{$this->tableSpec['class']}'" : null;
+		$caption = isset($this->tableSpec['caption']) ? "<caption>{$this->tableSpec['caption']}</caption>" : null;
+
+		$htmlTable = "<table{$id}{$class}>";
+		$htmlTable .= $caption;
+		$htmlTable .= $this->tableHead;
+		$htmlTable .= $this->tableBody;
+		$htmlTable .= $this->tableFoot;
+		$htmlTable .= "\n</table>";
+
+		return $htmlTable;
+	}
 }