note 60151 deleted from language.variables by danbrown

Note Submitter: warhog at warhog dot net ---- > Variable names follow the same rules as other labels in PHP. A valid variable name starts with > a letter or underscore, followed by any number of letters, numbers, or underscores. As a regular > expression, it would be expressed thus: '[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*' ..is not quite true. You can, in fact, only declare variables having a name like this if you use the syntax <?php $varname = "naks naks"; ?>.. but in fact a variable can have moreless any name that is a string... e.g. if you look at an array you can have <?php $arr['']; $arr['8']; $arr['-my-element-is-so-pretty-useless-']; ?> .. by accessing the variables-namespace via {} you can have the same functinalities for all variables, e.g. <?php ${''} = "my empty variable"; ?> is a valid expression and the variable having the empty string as name will have the value "my empty variable". read the chapter on "variable variables" for further information.