Most Referenced Functions
  » google_pagerank()
  » preg_replace()
  » imagecreatefrompng()
  » site_pageranks()
  » imagepng()
  » imagestring()
  » imagedestroy()
  » htmlentities()
  » imagecolorallocate()
  » fopen()
  » preg_match()
  » header()
  » getimagesize()
  » session_start()
  » ob_start()
  » preg_match_all()
  » strstr()
  » flush()
  » ob_flush()
  » strpos()
  » array2vars()
  » str_replace()
  » htmlspecialchars()
  » nl2br()
  » setcookie()
  » urlencode()
  » preg_split()
  » ereg()
  » ereg_replace()
  » var_dump()

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PHP Functions

Function: gettype

(PHP 3, PHP 4, PHP 5)

gettype -- Get the type of a variable

Description

string gettype ( mixed var )

Returns the type of the PHP variable var .

Warning

Never use gettype() to test for a certain type, since the returned string may be subject to change in a future version. In addition, it is slow too, as it involves string comparison.

Instead, use the is_* functions.

Possibles values for the returned string are:

" boolean " (since PHP 4)

" integer "

" double " (for historical reasons "double" is returned in case of a float , and not simply "float")

" string "

" array "

" object "

" resource " (since PHP 4)

" NULL " (since PHP 4)

"user function" (PHP 3 only, deprecated)

"unknown type"

For PHP 4, you should use function_exists() and method_exists() to replace the prior usage of gettype() on a function.

Related Function(s)

  • function_exists()
  • method_exists()
  • settype()
  • is_array()
  • is_bool()
  • is_float()
  • is_int()
  • is_null()
  • is_numeric()
  • is_object()
  • is_resource()
  • is_scalar()
  • is_string()
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