is_float(3) [php man page]

IS_FLOAT(3)								 1							       IS_FLOAT(3)

is_float - Finds whether the type of a variable is float

SYNOPSIS

       bool is_float (mixed  $var)

DESCRIPTION

	Finds whether the type of the given variable is float.

       Note

	       To test if a variable is a number or a numeric string (such as form input, which is always a string), you must use is_numeric(3).

PARAMETERS

	      o $var
		- The variable being evaluated.

RETURN VALUES

	Returns TRUE if $var is a float, FALSE otherwise.

EXAMPLES

       Example #1

	      is_float(3) example

	      <?php
	      if (is_float(27.25)) {
		  echo "is float
";
	      } else {
		  echo "is not float
";
	      }
	      var_dump(is_float('abc'));
	      var_dump(is_float(23));
	      var_dump(is_float(23.5));
	      var_dump(is_float(1e7));	//Scientific Notation
	      var_dump(is_float(true));
	      ?>

	      The above example will output:

	      is float
	      bool(false)
	      bool(false)
	      bool(true)
	      bool(true)
	      bool(false)

SEE ALSO

       is_bool(3), is_int(3), is_numeric(3), is_string(3), is_array(3), is_object(3).

PHP Documentation Group 													       IS_FLOAT(3)

IS_STRING(3)								 1							      IS_STRING(3)

is_string - Find whether the type of a variable is string

SYNOPSIS

       bool is_string (mixed  $var)

DESCRIPTION

	Finds whether the type given variable is string.

PARAMETERS

	      o $var
		- The variable being evaluated.

RETURN VALUES

	Returns TRUE if $var is of type string, FALSE otherwise.

EXAMPLES

       Example #1

	      is_string(3) example

	      <?php
	      $values = array(false, true, null, 'abc', '23', 23, '23.5', 23.5, '', ' ', '0', 0);
	      foreach ($values as $value) {
		  echo "is_string(";
		  var_export($value);
		  echo ") = ";
		  echo var_dump(is_string($value));
	      }
	      ?>

	      The above example will output:

	      is_string(false) = bool(false)
	      is_string(true) = bool(false)
	      is_string(NULL) = bool(false)
	      is_string('abc') = bool(true)
	      is_string('23') = bool(true)
	      is_string(23) = bool(false)
	      is_string('23.5') = bool(true)
	      is_string(23.5) = bool(false)
	      is_string('') = bool(true)
	      is_string(' ') = bool(true)
	      is_string('0') = bool(true)
	      is_string(0) = bool(false)

SEE ALSO

       is_float(3), is_int(3), is_bool(3), is_object(3), is_array(3).

PHP Documentation Group 													      IS_STRING(3)