PHP/Reflection/is string

Using an is_ function to determine a proper data type

   <source lang="html4strict">

<?php

   $unknownvar = "asdf"; 
   echo gettype ($unknownvar) . "
"; 
   if (is_string ($unknownvar)){ 
       echo "Is a string
"; 
   } 

?>

 </source>
   
  

Using is_ function to determine a proper data type and then work with it

   <source lang="html4strict">

<?php

 $unknownvar = "Hello World";
 echo gettype ($unknownvar) . "
";
 if (is_string ($unknownvar)){
   echo "Is a string
";
 }
 $mynumber = "1.03";
 $mynumber = settype ($mynumber ,"integer");
 echo $mynumber . "
";
 echo (int) $mynumber;

?>

 </source>