Use language independent permalinks for php.net urls

@see http://php.net/urlhowto.php

pages/Design-Patterns.md

@@ -196,7 +196,7 @@ add new output types without affecting the client code.
 
 You will see how each concrete 'output' class implements an OutputInterface - this serves two purposes, primarily it
 provides a simple contract which must be obeyed by any new concrete implementations. Secondly by implementing a common
-interface you will see in the next section that you can now utilise [Type Hinting](http://php.net/manual/en/language.oop5.typehinting.php) to ensure that the client which is utilising these behaviours is of the correct type in
+interface you will see in the next section that you can now utilise [Type Hinting](http://php.net/language.oop5.typehinting) to ensure that the client which is utilising these behaviours is of the correct type in
 this case 'OutputInterface'.
 
 The next snippet of code outlines how a calling client class might use one of these algorithms and even better set the

pages/Functional-Programming.md

@@ -82,6 +82,6 @@ defined to capture variables in scope and access them later when the anonymous f
 * [More details in the Closures RFC][closures-rfc]
 * [Read about dynamically invoking functions with `call_user_func_array`][call-user-func-array]
 
-[anonymous-functions]: http://www.php.net/manual/en/functions.anonymous.php
-[call-user-func-array]: http://php.net/manual/en/function.call-user-func-array.php
+[anonymous-functions]: http://php.net/functions.anonymous
+[call-user-func-array]: http://php.net/function.call-user-func-array
 [closures-rfc]: https://wiki.php.net/rfc/closures

pages/The-Basics.md

@@ -33,8 +33,8 @@ if (strpos('testing', 'test') !== false) {    // true, as strict comparison was
 }
 {% endhighlight %}
 
-* [Comparison operators](http://php.net/manual/en/language.operators.comparison.php)
-* [Comparison table](http://php.net/manual/en/types.comparisons.php)
+* [Comparison operators](http://php.net/language.operators.comparison)
+* [Comparison table](http://php.net/types.comparisons)
 
 ## Conditional statements
 
@@ -66,7 +66,7 @@ function test($a)
 }
 {% endhighlight %}
 
-* [If statements](http://php.net/manual/en/control-structures.if.php)
+* [If statements](http://php.net/control-structures.if)
 
 ### Switch statements
 
@@ -99,7 +99,7 @@ function test($a)
 }
 {% endhighlight %}
 
-* [Switch statements](http://php.net/manual/en/control-structures.switch.php)
+* [Switch statements](http://php.net/control-structures.switch)
 * [PHP switch](http://phpswitch.com/)
 
 ## Global namespace
@@ -124,8 +124,8 @@ function array()
 }
 {% endhighlight %}
 
-* [Global space](http://php.net/manual/en/language.namespaces.global.php)
-* [Global rules](http://php.net/manual/en/userlandnaming.rules.php)
+* [Global space](http://php.net/language.namespaces.global)
+* [Global rules](http://php.net/userlandnaming.rules)
 
 ## Strings
 
@@ -149,7 +149,7 @@ $a = 'Multi-line example'      // concatenation operator (.)
     . 'of what to do';
 {% endhighlight %}
 
-* [String Operators](http://php.net/manual/en/language.operators.string.php)
+* [String Operators](http://php.net/language.operators.string)
 
 ### String types
 
@@ -177,7 +177,7 @@ echo 'This is my string, look at how pretty it is.';    // no need to parse a si
  */
 {% endhighlight %}
 
-* [Single quote](http://www.php.net/manual/en/language.types.string.php#language.types.string.syntax.single)
+* [Single quote](http://php.net/language.types.string#language.types.string.syntax.single)
 
 #### Double quotes
 
@@ -227,7 +227,7 @@ $juice = array('apple', 'orange', 'plum');
 echo "I drank some juice made of {$juice[1]}s";   // $juice[1] will be parsed
 {% endhighlight %}
 
-* [Double quotes](http://www.php.net/manual/en/language.types.string.php#language.types.string.syntax.double)
+* [Double quotes](http://php.net/language.types.string#language.types.string.syntax.double)
 
 #### Nowdoc syntax
 
@@ -253,7 +253,7 @@ EOD;                        // closing 'EOD' must be on it's own line, and to th
  */
 {% endhighlight %}
 
-* [Nowdoc syntax](http://www.php.net/manual/en/language.types.string.php#language.types.string.syntax.nowdoc)
+* [Nowdoc syntax](http://php.net/language.types.string#language.types.string.syntax.nowdoc)
 
 #### Heredoc syntax
 
@@ -281,7 +281,7 @@ EOD;                        // closing 'EOD' must be on it's own line, and to th
  */
 {% endhighlight %}
 
-* [Heredoc syntax](http://www.php.net/manual/en/language.types.string.php#language.types.string.syntax.heredoc)
+* [Heredoc syntax](http://php.net/language.types.string#language.types.string.syntax.heredoc)
 
 ### Which is quicker? 
 
@@ -380,7 +380,7 @@ Another example is the snippet below which will return true if ($a != 3 AND $b !
 return ($a != 3 && $b != 4) || $c == 5;
 {% endhighlight %}
 
-* [Ternary operators](http://php.net/manual/en/language.operators.comparison.php)
+* [Ternary operators](http://php.net/language.operators.comparison)
 
 ## Variable declarations