add <?php tags to all.

version/1.0.0-beta1/index.md

@@ -173,6 +173,7 @@ Available Rules
   alphabetic characters. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'alpha');
         {% endhighlight %}
 
@@ -182,12 +183,14 @@ Available Rules
   Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'between', $max, $min);
         {% endhighlight %}
 
 - `blank`: Validate the value as being blank. Sanitize to `null`. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'blank');
         {% endhighlight %}
 
@@ -197,13 +200,15 @@ Available Rules
   Sanitize to a strict PHP boolean. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'bool');
         {% endhighlight %}
 
 - `creditCard`: Validate the value as being a credit card number. The value
   cannot be sanitized. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'creditCard');
         {% endhighlight %}
 
@@ -212,13 +217,15 @@ Available Rules
   this is to sanitize, not validate):
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::FIX, 'dateTime', $format);
         {% endhighlight %}
 
 - `email`: Validate the value as being a properly-formed email address. The
   value cannot be sanitized. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'email');
         {% endhighlight %}
 
@@ -227,13 +234,15 @@ Available Rules
   Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'equalToField', 'other_field_name');
         {% endhighlight %}
 
 - `equalToValue`: Validate the value as loosely equal to a specified value.
   Sanitize to the specified value. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'equalToValue', $other_value);
         {% endhighlight %}
 
@@ -242,20 +251,23 @@ Available Rules
   expect. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'float');
         {% endhighlight %}
 
 - `inKeys`: Validate that the value is loosely equal to a key in a given
   array. The value cannot be sanitized. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'inKeys', $array);
         {% endhighlight %}
 
 - `inValues`: Validate that the value is strictly equal to at least one value
   in a given array. The value cannot be sanitized. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'inValues', $array);
         {% endhighlight %}
 
@@ -264,13 +276,15 @@ Available Rules
   expect. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'int');
         {% endhighlight %}
 
 - `ipv4`: Validate the value as an IPv4 address. The value cannot be
   sanitized. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'ipv4');
         {% endhighlight %}
 
@@ -279,6 +293,7 @@ Available Rules
   Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'max', $max);
         {% endhighlight %}
 
@@ -287,13 +302,15 @@ Available Rules
   miniumum.Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'min', $min);
         {% endhighlight %}
 
 - `regex`: Validate the value using `preg_match()`. Sanitize the value using
   `preg_replace()`.
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'regex', $expr);
         {% endhighlight %}
 
@@ -302,13 +319,15 @@ Available Rules
   Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'strictEqualToField', 'other_field_name');
         {% endhighlight %}
 
 - `strictEqualToValue`: Validate the value as strictly equal to a specified
   value. Sanitize to the specified value. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'strictEqualToValue', $other_value);
         {% endhighlight %}
 
@@ -317,13 +336,15 @@ Available Rules
   (note that this is to sanitize, not validate):
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::FIX, 'string', $find, $replace);
         {% endhighlight %}
 
 - `strlen`: Validate the value has a specified length. Sanitize the value
   to cut off longer values at the right, and `str_pad()` shorter ones. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'strlen', $len);
         {% endhighlight %}
 
@@ -333,48 +354,55 @@ Available Rules
   Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'strlenBetween', $min, $max);
         {% endhighlight %}
 
 - `strlenMax`: Validate the value length as being no longer than a maximum.
   Sanitize the value to cut off values longer than the maximum. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'strlenMax', $max);
         {% endhighlight %}
 
 - `strlenMin`: Validate the value length as being no shorter than a minimum.
   Sanitize the value to `str_pad()` values shorter than the minimum. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'strlenMin', $min);
         {% endhighlight %}
 
 - `trim`: Validate the value is `trim()`med. Sanitize the value to `trim()` it.
   Optionally specify characters to trim. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'trim', $chars);
         {% endhighlight %}
 
 - `upload`: Validate the value represents a PHP upload information array, and
   that the file is an uploaded file. The value cannot be sanitized. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'upload');
         {% endhighlight %}
 
 - `url`: Validate the value is a well-formed URL. The value cannot be
   sanitized. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'url');
         {% endhighlight %}
 
 - `word`: Validate the value as being composed only of word characters.
  Sanitize the value to remove non-word characters. Usage:
 
         {% highlight php %}
+        <?php
         $filter->addSoftRule('field', $filter::IS, 'word');
         {% endhighlight %}