PHP Function List

Sorry, but the function is_defined is not in the online manual. Perhaps you misspelled it, or it is a relatively new function that hasn't made it into the online documentation yet. The following are the 20 functions which seem to be closest in spelling to is_defined (really good matches are in bold). Perhaps you were looking for one of these:

defined
isuserdefined
define
is_finite
is_file
swf_definepoly
swf_definefont

swf_defineline
swf_definetext
is_infinite
swf_definerect
is_dir
is_int
swf_definebitmap

is_uploaded_file
get_defined_vars
isdisabled
is_integer
hwapi_find
isfinal

If you want to search the entire PHP website for the string "is_defined", then click here.

For a quick overview over all documented PHP functions, click here.