1 files changed, 12 insertions, 11 deletions
diff --git a/php.html.markdown b/php.html.markdown
index 73445839..5f5a4b54 100644
--- a/php.html.markdown
+++ b/php.html.markdown
@@ -1,7 +1,8 @@
 ---
 language: php
-author: Malcolm Fell
-author_url: http://emarref.net/
+contributors:
+    - ["Malcolm Fell", "http://emarref.net/"]
+    - ["Trismegiste", "https://github.com/Trismegiste"]
 filename: learnphp.php
 ---
 
@@ -47,9 +48,9 @@ $boolean = true;  // or TRUE or True
 $boolean = false; // or FALSE or False
 
 // Integers
-$int1 = 19;   // => 19
-$int2 = -19;  // => -19
-$int3 = 019;  // => 15 (a leading 0 denotes an octal number)
+$int1 = 12;   // => 12
+$int2 = -12;  // => -12
+$int3 = 012;  // => 10 (a leading 0 denotes an octal number)
 $int4 = 0x0F; // => 15 (a leading 0x denotes a hex literal)
 
 // Floats (aka doubles)
@@ -395,9 +396,6 @@ echo $function_name(1, 2); // => 3
  * Includes
  */
 
-/*
-```
-```php
 <?php
 // PHP within included files must also begin with a PHP open tag.
 
@@ -541,6 +539,12 @@ interface InterfaceTwo
     public function doSomethingElse();
 }
 
+// interfaces can be extended
+interface InterfaceThree extends InterfaceTwo
+{
+    public function doAnotherContract();
+}
+
 abstract class MyAbstractClass implements InterfaceOne
 {
     public $x = 'doSomething';
@@ -605,9 +609,6 @@ $cls->myTraitMethod(); // Prints "I have MyTrait"
 // This section is separate, because a namespace declaration
 // must be the first statement in a file. Let's pretend that is not the case
 
-/*
-```
-```php
 <?php
 
 // By default, classes exist in the global namespace, and can