note 35822 added to language.variables.variable

Variable variables let you assign values to invalid variable names (those with hyphens, dots, etc.). $foo = "invalid-variable"; $$foo = "value of invalid variable"; How do you access them once you've done this? echo ${"invalid-variable"}; // value of invalid variable Note that this works with registered globals (i.e. script.php?invalid-variable=value+of+invalid+variable) although dots are converted to underscores for query parameter names. Basically, any valid or invalid variable name can be used, as long as it's in quotes and braces: $foo = '4site'; $$foo = 'not yet'; echo ${'4site'} // not yet ---- Manual Page -- http://www.php.net/manual/en/language.variables.variable.php Edit Note -- http://master.php.net/manage/user-notes.php?action=edit+35822 Delete Note -- http://master.php.net/manage/user-notes.php?action=delete+35822&report=yes Reject Note -- http://master.php.net/manage/user-notes.php?action=reject+35822&report=yes