added ability to "extend" helpers

* modified Loader to check for prefixed helpers in application/helpers folder
* surrounded provided helper functions with if (! function_exists('foo')) conditionals so the user's helper functions take precedent.

1 files changed, 17 insertions, 15 deletions

diff --git a/system/helpers/xml_helper.php b/system/helpers/xml_helper.php
index 1a2c7379c..5aa6de9ec 100644
--- a/system/helpers/xml_helper.php
+++ b/system/helpers/xml_helper.php
@@ -34,25 +34,27 @@
  * @param	string

  * @return	string

  */	

-function xml_convert($str)

+if (! function_exists('xml_convert'))

 {

-	$temp = '__TEMP_AMPERSANDS__';

-

-	// Replace entities to temporary markers so that 

-	// ampersands won't get messed up

-	$str = preg_replace("/&#(\d+);/", "$temp\\1;", $str);

-	$str = preg_replace("/&(\w+);/",  "$temp\\1;", $str);

+	function xml_convert($str)

+	{

+		$temp = '__TEMP_AMPERSANDS__';

+

+		// Replace entities to temporary markers so that 

+		// ampersands won't get messed up

+		$str = preg_replace("/&#(\d+);/", "$temp\\1;", $str);

+		$str = preg_replace("/&(\w+);/",  "$temp\\1;", $str);

 	

-	$str = str_replace(array("&","<",">","\"", "'", "-"),

-					   array("&amp;", "&lt;", "&gt;", "&quot;", "&#39;", "&#45;"),

-					   $str);

+		$str = str_replace(array("&","<",">","\"", "'", "-"),

+						   array("&amp;", "&lt;", "&gt;", "&quot;", "&#39;", "&#45;"),

+						   $str);

 

-	// Decode the temp markers back to entities		

-	$str = preg_replace("/$temp(\d+);/","&#\\1;",$str);

-	$str = preg_replace("/$temp(\w+);/","&\\1;", $str);

+		// Decode the temp markers back to entities		

+		$str = preg_replace("/$temp(\d+);/","&#\\1;",$str);

+		$str = preg_replace("/$temp(\w+);/","&\\1;", $str);

 		

-	return $str;

+		return $str;

+	}

 }

 

-

 ?>
\ No newline at end of file