PHP Digital judgment Function _php Tutorial

PHP's several commonly used number judgment function code, mainly including double precision, integer, character judgment and so on.

  Commonly used numerical judgment function   
 
  "); } Double-precision number judgment $Temperature = 15.23; if (is_double ($Temperature)) {print ("Temperature is a double". "
"); } Integer judgment $PageCount = 2234; if (Is_integer ($PageCount)) {print ("$PageCount is an integer". "
"); } The object determines the class widget {var $name; var $length;} $thing = new Widget; if (Is_object ($thing)) {print ("thing is an object". "
"); } Character judgment $Greeting = "Hello"; if (is_string ($Greeting)) {print ("greeting is a string". "
"); } ? >  

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