diff --git a/core/HTTP.php b/core/HTTP.php
index 0b1480795..17158ed94 100644
--- a/core/HTTP.php
+++ b/core/HTTP.php
@@ -146,7 +146,7 @@ class HTTP {
 			$mimeTypes = file('/etc/mime.types');
 			foreach($mimeTypes as $typeSpec) {
 				if(($typeSpec = trim($typeSpec)) && substr($typeSpec,0,1) != "#") {
-					$parts = split("[ \t\r\n]+", $typeSpec);
+					$parts = preg_split("/[ \t\r\n]+/", $typeSpec);
 					if(sizeof($parts) > 1) {
 						$mimeType = array_shift($parts);
 						foreach($parts as $ext) {
diff --git a/core/control/HTTPRequest.php b/core/control/HTTPRequest.php
index 7294341c5..593b03849 100644
--- a/core/control/HTTPRequest.php
+++ b/core/control/HTTPRequest.php
@@ -96,7 +96,7 @@ class HTTPRequest extends Object implements ArrayAccess {
 			$this->url = $matches[1];
 			$this->extension = $matches[2];
 		}
-		if($this->url) $this->dirParts = split('/+', $this->url);
+		if($this->url) $this->dirParts = preg_split('|/+|', $this->url);
 		else $this->dirParts = array();
 		
 		$this->getVars = (array)$getVars;
diff --git a/core/model/DataObjectSet.php b/core/model/DataObjectSet.php
index 73fe57d63..223b4e713 100644
--- a/core/model/DataObjectSet.php
+++ b/core/model/DataObjectSet.php
@@ -183,9 +183,9 @@ class DataObjectSet extends ViewableData implements IteratorAggregate, Countable
 				$length = $query->limit['limit'];
 				$start = $query->limit['start'];
 			} else if(stripos($query->limit, 'OFFSET')) {
-				list($length, $start) = split(" +OFFSET +", trim($query->limit));
+				list($length, $start) = preg_split("/ +OFFSET +/", trim($query->limit));
 			} else {
-				$result = split(" *, *", trim($query->limit));
+				$result = preg_split("/ *, */", trim($query->limit));
 				$start = $result[0];
 				$length = isset($result[1]) ? $result[1] : null;
 			}
diff --git a/core/model/YamlFixture.php b/core/model/YamlFixture.php
index 031aed09e..53f78bd58 100644
--- a/core/model/YamlFixture.php
+++ b/core/model/YamlFixture.php
@@ -172,7 +172,7 @@ class YamlFixture extends Object {
 			foreach($fields as $fieldName => $fieldVal) {
 				if($obj->many_many($fieldName) || $obj->has_many($fieldName)) {
 					$parsedItems = array();
-					$items = split(' *, *',trim($fieldVal));
+					$items = preg_split('/ *, */',trim($fieldVal));
 					foreach($items as $item) {
 						$parsedItems[] = $this->parseFixtureVal($item);
 					}
diff --git a/core/model/fieldtypes/Enum.php b/core/model/fieldtypes/Enum.php
index 8296748d8..f6bd7954d 100755
--- a/core/model/fieldtypes/Enum.php
+++ b/core/model/fieldtypes/Enum.php
@@ -20,7 +20,7 @@ class Enum extends DBField {
 	function __construct($name, $enum = NULL, $default = NULL) {
 		if($enum) {
 			if(!is_array($enum)){
-				$enum = split(" *, *", trim($enum));
+				$enum = preg_split("/ *, */", trim($enum));
 			}
 
 			$this->enum = $enum;
diff --git a/dev/CsvBulkLoader.php b/dev/CsvBulkLoader.php
index e1347be8e..6e484c13e 100644
--- a/dev/CsvBulkLoader.php
+++ b/dev/CsvBulkLoader.php
@@ -90,7 +90,7 @@ class CsvBulkLoader extends BulkLoader {
 				
 			} elseif(strpos($fieldName, '.') !== false) {
 				// we have a relation column with dot notation
-				list($relationName,$columnName) = split('\.', $fieldName);
+				list($relationName,$columnName) = explode('.', $fieldName);
 				$relationObj = $obj->getComponent($relationName); // always gives us an component (either empty or existing)
 				$obj->setComponent($relationName, $relationObj);
 				$relationObj->write();
diff --git a/email/Mailer.php b/email/Mailer.php
index 04d24b798..588bf944e 100644
--- a/email/Mailer.php
+++ b/email/Mailer.php
@@ -460,7 +460,7 @@ function loadMimeTypes() {
 	$mimeTypes = file_exists($mimetypePathGeneric) ?  file($mimetypePathGeneric) : file($mimetypePathCustom);
 	foreach($mimeTypes as $typeSpec) {
 		if(($typeSpec = trim($typeSpec)) && substr($typeSpec,0,1) != "#") {
-			$parts = split("[ \t\r\n]+", $typeSpec);
+			$parts = preg_split("/[ \t\r\n]+/", $typeSpec);
 			if(sizeof($parts) > 1) {
 				$mimeType = array_shift($parts);
 				foreach($parts as $ext) {
diff --git a/forms/CheckboxSetField.php b/forms/CheckboxSetField.php
index a1531e362..75028b9a0 100755
--- a/forms/CheckboxSetField.php
+++ b/forms/CheckboxSetField.php
@@ -209,7 +209,7 @@ class CheckboxSetField extends OptionsetField {
 			// Items is an array or single piece of string (including comma seperated string)
 			} else {
 				if(!is_array($items)) {
-					$items = split(' *, *', trim($items));
+					$items = preg_split('/ *, */', trim($items));
 				}
 				
 				foreach($items as $item) {
diff --git a/forms/TreeDropdownField.php b/forms/TreeDropdownField.php
index 3a7501dea..3dcff4899 100755
--- a/forms/TreeDropdownField.php
+++ b/forms/TreeDropdownField.php
@@ -72,7 +72,7 @@ HTML;
 
 		// If we've already got values selected, make sure that we've got them in our tree
 		if($_REQUEST['forceValues']) {
-			$forceValues = split(" *, *", trim($_REQUEST['forceValues']));
+			$forceValues = preg_split("/ *, */", trim($_REQUEST['forceValues']));
 			foreach($forceValues as $value) {
 				$obj->markToExpose($this->getByKey($value));
 			}			
diff --git a/forms/TreeMultiselectField.php b/forms/TreeMultiselectField.php
index 25f26457f..8d5f5a792 100755
--- a/forms/TreeMultiselectField.php
+++ b/forms/TreeMultiselectField.php
@@ -66,7 +66,7 @@ HTML;
 			if(!$saveDest) user_error("TreeMultiselectField::saveInto() Field '$fieldName' not found on $record->class.$record->ID", E_USER_ERROR);
 			
 			if($this->value) {
-				$items = split(" *, *", trim($this->value));
+				$items = preg_split("/ *, */", trim($this->value));
 			}
 					
 			// Allows you to modify the items on your object before save
diff --git a/forms/TreeSelectorField.php b/forms/TreeSelectorField.php
index cae75fc38..7b1fdcba2 100755
--- a/forms/TreeSelectorField.php
+++ b/forms/TreeSelectorField.php
@@ -51,7 +51,7 @@ HTML;
 		$saveDest = $record->$fieldName();
 
 		if($this->value) {
-			$items = split(" *, *", trim($this->value));
+			$items = preg_split("/ *, */", trim($this->value));
 		}
 
 		$saveDest->setByIDList($items);
diff --git a/search/SearchForm.php b/search/SearchForm.php
index 8983e38e5..cd2949c05 100755
--- a/search/SearchForm.php
+++ b/search/SearchForm.php
@@ -138,7 +138,7 @@ class SearchForm extends Form {
 	protected function addStarsToKeywords($keywords) {
 		if(!trim($keywords)) return "";
 		// Add * to each keyword
-		$splitWords = split(" +" , trim($keywords));
+		$splitWords = preg_split("/ +/" , trim($keywords));
 		while(list($i,$word) = each($splitWords)) {
 			if($word[0] == '"') {
 				while(list($i,$subword) = each($splitWords)) {