Customise "old" and "new" labels

example/example.php

@@ -24,6 +24,12 @@
 			//'ignoreCase' => true,
 		);
 
+		// Options for the renderer (change labels)
+		$renderer_options = array(
+			'old'=> 'Production',
+			'new'=>	'Development'
+		);
+
 		// Initialize the diff class
 		$diff = new Diff($a, $b, $options);
 
@@ -36,6 +42,13 @@
 		$renderer = new Diff_Renderer_Html_SideBySide;
 		echo $diff->Render($renderer);
 
+		?>
+		<h2>Side by Side Diff with custom labels</h2>
+		<?php
+
+		// Generate a side by side diff with custom labels
+		echo $diff->Render($renderer, $renderer_options);
+
 		?>
 		<h2>Inline Diff</h2>
 		<?php
@@ -45,6 +58,13 @@
 		$renderer = new Diff_Renderer_Html_Inline;
 		echo $diff->render($renderer);
 
+		?>
+		<h2>Inline Diff with custom labels</h2>
+		<?php
+
+		// Generate an inline diff with custom labels
+		echo $diff->render($renderer, $renderer_options);
+
 		?>
 		<h2>Unified Diff</h2>
 		<pre><?php

lib/Diff.php

@@ -67,7 +67,9 @@ class Diff
 		'context' => 3,
 		'ignoreNewLines' => false,
 		'ignoreWhitespace' => false,
-		'ignoreCase' => false
+		'ignoreCase' => false,
+		'old' => false,
+		'new' => false,
 	);
 
 	/**
@@ -98,10 +100,14 @@ public function __construct($a, $b, $options=array())
 	 * @param object $renderer An instance of the rendering object to use for generating the diff.
 	 * @return mixed The generated diff. Exact return value depends on the rendered.
 	 */
-	public function render(Diff_Renderer_Abstract $renderer)
+	public function render(Diff_Renderer_Abstract $renderer,$renderer_options=false)
 	{
 		$renderer->diff = $this;
-		return $renderer->render();
+		if($renderer_options) {
+			return $renderer->render($renderer_options);
+		} else {
+			return $renderer->render();
+		}
 	}
 
 	/**

lib/Diff/Renderer/Html/Inline.php

@@ -50,7 +50,7 @@ class Diff_Renderer_Html_Inline extends Diff_Renderer_Html_Array
 	 *
 	 * @return string The generated inline diff.
 	 */
-	public function render()
+	public function render($renderer_options=array())
 	{
 		$changes = parent::render();
 		$html = '';
@@ -61,8 +61,8 @@ public function render()
 		$html .= '<table class="Differences DifferencesInline">';
 		$html .= '<thead>';
 		$html .= '<tr>';
-		$html .= '<th>Old</th>';
-		$html .= '<th>New</th>';
+		$html .= '<th>'.(!empty($renderer_options['old']) ? htmlspecialchars($renderer_options['old']) :'Old').'</th>';
+		$html .= '<th>'.(!empty($renderer_options['new']) ? htmlspecialchars($renderer_options['new']) :'New').'</th>';
 		$html .= '<th>Differences</th>';
 		$html .= '</tr>';
 		$html .= '</thead>';

lib/Diff/Renderer/Html/SideBySide.php

@@ -50,7 +50,7 @@ class Diff_Renderer_Html_SideBySide extends Diff_Renderer_Html_Array
 	 *
 	 * @return string The generated side by side diff.
 	 */
-	public function render()
+	public function render($renderer_options=array())
 	{
 		$changes = parent::render();
 
@@ -62,8 +62,8 @@ public function render()
 		$html .= '<table class="Differences DifferencesSideBySide">';
 		$html .= '<thead>';
 		$html .= '<tr>';
-		$html .= '<th colspan="2">Old Version</th>';
-		$html .= '<th colspan="2">New Version</th>';
+		$html .= '<th colspan="2">'.(!empty($renderer_options['old']) ? htmlspecialchars($renderer_options['old']) :'Old Version').'</th>';
+		$html .= '<th colspan="2">'.(!empty($renderer_options['new']) ? htmlspecialchars($renderer_options['new']) :'New Version').'</th>';
 		$html .= '</tr>';
 		$html .= '</thead>';
 		foreach($changes as $i => $blocks) {