Resolved the issue of warnings showing up when trying to add a new shool under school management.

.gitignore

@@ -0,0 +1 @@
+data/

admin/registration_webconsent.php

@@ -45,20 +45,24 @@
 			$webfirst=get_value_from_2d_array($_POST,'webfirst', $id)=="yes"?"yes":"no";
 			$weblast=get_value_from_2d_array($_POST, 'weblast', $id)=="yes"?"yes":"no";
 			$webphoto=get_value_from_2d_array($_POST, 'webphoto', $id)=="yes"?"yes":"no";
+
 			$stmt = $pdo->prepare("UPDATE students SET 
 					webfirst='$webfirst',
 					weblast='$weblast',
 					webphoto='$webphoto'
 					WHERE
 					id='$id'");
+			$stmt->execute();
 		}
 	}
- 	if($numchanged==1)
+
+ 	if($numchanged==1) {
 		echo happy(i18n("1 student record updated"));
-	else if($numchanged>1)
+	} else if($numchanged>1) {
 		echo happy(i18n("%1 student records updated",array($numchanged)));
-	else
+	} else {
 		echo error(i18n("No student records where changed"));
+	}
 }
  ?>
  <script type="text/javascript">

admin/schools.php

@@ -54,10 +54,21 @@
 
 		$principal_update = '';
 		$sciencehead_update = '';
-		list($first, $last) = explode(' ', get_value_from_array($_POST,'principal') ?? '', 2);
+	
+		// list($first, $last)
+		$split =  explode(' ', get_value_from_array($_POST,'principal') ?? '', 2);
+		
+		if(count($split) === 2){
+			list($first, $last) = $split;
+		}
+		else{
+			$first = $split[0];
+			$last = '';
+		}
+		
 		/* Load existing entry if it exists, else make an entry if
 		 * there is data, else, do nothing */
-		if($i['principal_uid'] > 0) 
+		if(get_value_from_array($i, 'principal_uid') > 0) 
 			$pl = user_load_by_uid($i['principal_uid']);
 		else if($first != '' && $last != '') {
 			$pl = user_create('principal', "*$first$last".user_generate_password());
@@ -84,7 +95,15 @@
 
 		/* Get info about science head */
 		// FIX ME
-		list($first, $last) = explode(' ', get_value_from_array($_POST, 'sciencehead', ''), 2);
+		$split =  explode(' ', get_value_from_array($_POST,'principal') ?? '', 2);
+		
+		if(count($split) === 2){
+			list($first, $last) = $split;
+		}
+		else{
+			$first = $split[0];
+			$last = '';
+		}
 		$em = get_value_from_array($_POST,'scienceheademail');
 		if($em == '' && ($first != '' || $last != '')) $em = "*$first$last".user_generate_password();
 		/* Load existing record, or create new if there's something