diff --git a/Tests/verifyTest.php b/Tests/verifyTest.php
new file mode 100644
index 0000000..9279826
--- /dev/null
+++ b/Tests/verifyTest.php
@@ -0,0 +1,96 @@
+<?php
+
+require_once ("verify.php");
+
+/** Test the Verify */
+class test_verify extends PHPUnit_Framework_TestCase
+{
+  ///////////////
+  //   DATES   //
+  ///////////////
+  public function test_is_datetimeSQL1 ()
+  {
+    $verify = new \verify ();
+    $res = $verify->is_datetimeSQL ("2017-04-13 22:55:17");
+    $this->assertSame ($res, true);
+  }
+
+  public function test_is_datetimeSQL2 ()
+  {
+    $verify = new \verify ();
+    $res = $verify->is_datetimeSQL ("2017-13-55 22:55:17");
+    $this->assertSame ($res, false);
+  }
+
+  public function test_staticIs_datetimeSQL1 ()
+  {
+    $res = \verify::staticIs_datetimeSQL ("2017-04-13 22:55:17");
+    $this->assertSame ($res, true);
+  }
+
+  public function test_staticIs_datetimeSQL2 ()
+  {
+    $res = \verify::staticIs_datetimeSQL ("2017-13-55 22:55:17");
+    $this->assertSame ($res, false);
+  }
+
+  /////////////////
+  //   NUMBERS   //
+  /////////////////
+  public function test_staticIs_integer1 ()
+  {
+    $res = \verify::staticIs_integer ("2017-04-13 22:55:17");
+    $this->assertSame ($res, false);
+  }
+
+  public function test_staticIs_integer2 ()
+  {
+    $res = \verify::staticIs_integer ("01234");
+    $this->assertSame ($res, true);
+  }
+
+  public function test_staticIs_integer3 ()
+  {
+    $res = \verify::staticIs_integer ("0x1234");
+    $this->assertSame ($res, false);
+  }
+
+  public function test_staticIs_integer4 ()
+  {
+    $res = \verify::staticIs_integer ("");
+    $this->assertSame ($res, false);
+  }
+
+  ////////////////
+  //   EMAILS   //
+  ////////////////
+
+  /////////////
+  //   URL   //
+  /////////////
+  public function test_is_url1 ()
+  {
+    $verify = new \verify ();
+    $res = $verify->is_url ("invalid");
+    $this->assertsame ($res, false);
+  }
+
+  public function test_is_url2 ()
+  {
+    $verify = new \verify ();
+    $res = $verify->is_url ("http://valid");
+    $this->assertsame ($res, true);
+  }
+
+  public function test_staticIs_url1 ()
+  {
+    $res = \verify::staticIs_url ("invalid");
+    $this->assertsame ($res, false);
+  }
+
+  public function test_staticIs_url2 ()
+  {
+    $res = \verify::staticIs_url ("http://valid");
+    $this->assertsame ($res, true);
+  }
+}
diff --git a/verify.php b/verify.php
index 8db912e..a711442 100644
--- a/verify.php
+++ b/verify.php
@@ -10,89 +10,149 @@ class verify
   //   NETWORK   //
   /////////////////
   /** Check if $val is a valid IPv4
-      Return TRUE or FALSE
-      @param string $val The IP to test */
+    * Return true or false
+    * @param string $val The IP to test
+    */
   public function is_ip ($val)
+  {
+    return $this->staticIs_ip ($val);
+  }
+
+  /** Check if $val is a valid IPv4 in static mode
+    * Return true or false
+    * @param string $val The IP to test
+    */
+  public function staticIs_ip ($val)
   {
     if (filter_var ($val, FILTER_VALIDATE_IP))
-      return TRUE;
-    return FALSE;
+      return true;
+    return false;
   }
 
   /** Check if $val is a valid IPv4
-      Return TRUE or FALSE
-      @param string $val The IPv4 to test */
+    * Return true or false
+    * @param string $val The IPv4 to test
+    */
   public function is_ipv4 ($val)
+  {
+    return $this->staticIs_ipv4 ($val);
+  }
+
+  /** Check if $val is a valid IPv4 in static mode
+    * Return true or false
+    * @param string $val The IPv4 to test
+    */
+  public function staticIs_ipv4 ($val)
   {
     if (filter_var ($val, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4))
-      return TRUE;
-    return FALSE;
+      return true;
+    return false;
   }
 
   /** Check if $val is a valid IPv6
-      Return TRUE or FALSE
-      @param string $val The IPv  to test */
+    * Return true or false
+    * @param string $val The IPv6 to test
+    */
   public function is_ipv6 ($val)
+  {
+    return $this->staticIs_ipv6 ($val);
+  }
+
+  /** Check if $val is a valid IPv6 in static mode
+    * Return true or false
+    * @param string $val The IPv6 to test
+    */
+  public static function staticIs_ipv6 ($val)
   {
     if (filter_var ($val, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6))
-      return TRUE;
-    return FALSE;
+      return true;
+    return false;
   }
 
   /** Check if $val is a valid hostname (without domain)
-      Return TRUE or FALSE
-      @param string $val The hostname to check */
+    * Return true or false
+    * @param string $val The hostname to check
+    */
   public function is_hostname ($val)
+  {
+    return $this->staticIs_hostname ($val);
+  }
+
+  /** Check if $val is a valid hostname (without domain)
+    * Return true or false
+    * @param string $val The hostname to check
+    */
+  public static function staticIs_hostname ($val)
   {
     if (strlen ($val) < 2 || strlen ($val) > 128)
-      return FALSE;
+      return false;
     if (strspn ($val, "abcdefghijklmnopqrstuvwxyz".
                       "ABCDEFGHIJKLMNOPQRSTUVWXYZ".
                       "0123456789-.") !==
       strlen ($val))
-      return FALSE;
+      return false;
     // No end dot ?
     if (substr ($val, -1) === ".")
-      return FALSE;
-    return TRUE;
+      return false;
+    return true;
   }
 
   /** Check if $val is a valid domain (without hostname)
-      Return TRUE or FALSE
-      @param string $val The domain to check */
+    * Return true or false
+    * @param string $val The domain to check
+    */
   public function is_domain ($val)
+  {
+    return $this->staticIs_domain ($val);
+  }
+
+  /** Check if $val is a valid domain (without hostname) in static mode
+    * Return true or false
+    * @param string $val The domain to check
+    */
+  public static function staticIs_domain ($val)
   {
     if (strlen ($val) < 2 || strlen ($val) > 128)
-      return FALSE;
+      return false;
     if (strspn ($val, "abcdefghijklmnopqrstuvwxyz".
                       "ABCDEFGHIJKLMNOPQRSTUVWXYZ".
                       "0123456789-.") !==
       strlen ($val))
-      return FALSE;
+      return false;
     // No end dot ?
     if (substr ($val, -1) === ".")
-      return FALSE;
-    return TRUE;
+      return false;
+    return true;
   }
 
   /** Check if $val is a valid FQDN
-      Return TRUE or FALSE
-      @param string $val The FQDN to check */
+    * Return true or false
+    * @param string $val The FQDN to check
+    */
   public function is_FQDN ($val)
+  {
+    return $this->staticIs_FQDN ($val);
+  }
+
+  /** Check if $val is a valid FQDN in static mode
+    * Return true or false
+    * @param string $val The FQDN to check
+    */
+  public static function staticIs_FQDN ($val)
   {
     if (strlen ($val) < 2 || strlen ($val) > 255)
-      return FALSE;
+      return false;
     if ($this->is_ip ($val))
-      return FALSE;
+      return false;
     if (strspn ($val, "abcdefghijklmnopqrstuvwxyz".
                       "ABCDEFGHIJKLMNOPQRSTUVWXYZ".
                       "0123456789-.") !==
       strlen ($val))
-      return FALSE;
+      return false;
     // No end dot ?
     if (substr ($val, -1) === ".")
-      return FALSE;
-    return TRUE;
+      return false;
+    return true;
   }
 
   ///////////////
@@ -100,45 +160,98 @@ class verify
   ///////////////
   /** Check if $val is a valid date
       A valid date is 2014-03-20 12:27:34
-      Return TRUE or FALSE
+      Return true or false
       @param string $val The date to check */
   public function is_datetimeSQL ($val)
+  {
+    return $this->staticIs_datetimeSQL ($val);
+  }
+
+  /** Check if $val is a valid date in static mode
+      A valid date is 2014-03-20 12:27:34
+      Return true or false
+      @param string $val The date to check */
+  public static function staticIs_datetimeSQL ($val)
   {
     if (strlen ($val) !== 19)
-      return FALSE;
+      return false;
     $arr = date_parse ($val);
     if ($arr["warning_count"] !==0)
-      return FALSE;
+      return false;
     if ($arr["error_count"] !==0)
-      return FALSE;
+      return false;
     if (isset ($arr["tz_abbr"]))
-      return FALSE;
+      return false;
     if (strspn ($val, "0123456789 :-") !== strlen ($val))
-      return FALSE;
-    return TRUE;
+      return false;
+    if (\DateTime::createFromFormat("Y-m-d H:i:s", $val) === false)
+      return false;
+    return true;
   }
 
   /////////////////
   //   NUMBERS   //
   /////////////////
-  /** Return TRUE if the provided value is an integer in decimal (not octal)
-      @param string $val The Integer val to check */
+  /** Return true if the provided value is an integer in decimal (not octal)
+    * @param string $val The Integer val to check
+    */
   public function is_integer ($val)
   {
+    return $this->staticIs_integer ($val);
+  }
+
+  /** Return true if the provided value is an integer in decimal (not octal)
+    * In static mode
+    * @param string $val The Integer val to check
+    */
+  public static function staticIs_integer ($val)
+  {
+    if (! is_string ($val) || trim ($val) === "")
+      return false;
     if (strspn ($val, "0123456789") !== strlen ($val))
-      return FALSE;
-    return TRUE;
+      return false;
+    return true;
   }
 
   ////////////////
   //   EMAILS   //
   ////////////////
-  /** Return TRUE if the provided value is a valid email address
+  /** Return true if the provided value is a valid email address
     * @param string $val The value to check
     * @return boolean
     */
   public function is_email ($val)
+  {
+    return $this->staticIs_email ($val);
+  }
+
+  /** Return true if the provided value is a valid email address in static mode
+    * @param string $val The value to check
+    * @return boolean
+    */
+  public static function staticIs_email ($val)
   {
     return !! filter_var ($val, FILTER_VALIDATE_EMAIL);
   }
+
+  /////////////
+  //   URL   //
+  /////////////
+  /** Return true if the provided value is a valid URL
+    * @param string $val The value to check
+    * @return boolean
+    */
+  public function is_URL ($val)
+  {
+    return $this->staticIs_URL ($val);
+  }
+
+  /** Return true if the provided value is a valid URL in static mode
+    * @param string $val The value to check
+    * @return boolean
+    */
+  public static function staticIs_URL ($val)
+  {
+    return !! filter_var ($val, FILTER_VALIDATE_URL);
+  }
 }