Useful php snippet for web designers

I’d like to share some useful php snippets I often use while developing my websites. I just save them in my snippet folder in Dreamweaver.

1. Quick variable retrieving (string):

   $page= $_GET["page"];
     if (!$page)   $page = "page name here";

2. Quick variable retrieving (number):

   $id= (int)$_GET["id"];
     if (!$id)   $id = 1;

3. A ‘for’ cycle:

   for($i=1950; $i<=2007; $i++) {
   echo "$i";
   }

4. A ‘switch’ statement:

   switch ($lang){
               case "" :
   	      echo "";
   	      break;
   	}

5. Antispam email:

   <?php
   function InsertMail($mail)
       {
       if ($mail=='') return '';
       $mail = str_replace(array('@',':','.'), array('&amp;#064;','&amp;#058;','&amp;#046;'), $mail);
       $mail = '<a href=mailto&amp;#058;'.$mail.'>'.$mail.'</a>';
       $len = strlen($mail);
       $i=0;
       while($i<$len)
           {
           $c = mt_rand(1,4);
           $par[] = (substr($mail, $i, $c));
           $i += $c;
           }
       $join = implode('"+ "', $par);
   
       return '<script type="text/javascript" language="javascript">
       <!--
       document.write("'.$join.'")
       //-->
       </script>';
       }
   echo InsertMail ('user@example.com');
   ?>
   

6. Replace accents in a query results

   function replace_accents($str) {
   $str = htmlentities($str, ENT_COMPAT, "UTF-8");
   $str = preg_replace('/&([a-zA-Z])(uml|acute|grave|circ|tilde);/','$1',$str);
   return html_entity_decode($str);}