Bug #9983 Updated: Operator Precedence Clarification/Additions

ID: 9983 Updated by: eru@php.net Reported By: yohgaki@dd.iij4u.or.jp -Status: Open +Status: Verified (bughunt) Bug Type: Documentation problem Operating System: Any PHP Version: Any Previous Comments: ------------------------------------------------------------------------ [2002-07-02 09:12:50] eru@php.net Redefined Version and OS for the Bughunt. Still open, still needs clarification from some experienced doc-writer. ------------------------------------------------------------------------ [2002-02-27 09:22:48] sander@php.net === from #15368 === The operators seciot of the online PHP Manual omits mention of: {} -- used to extarct a particular character from a string (with an aside about using {} to embed variable values in strings); [] -- the array subscriptor (which is actually listed inthe operator precedence table, though mentioned nowhere else); -> -- the object property/method accessor; & -- the reference operator (also listed in the precendence table, though never explained elsewhere); => -- the array key-to-value keyword (not techniclly an operator, I know, but because it's so "punctuation-y", probably a good thing to comment on in this section). Also, the operators precendence table at http://www.php.net/manual/en/language.operators.precedence.php should probably hyperlink each operator to the appropriate page describing it. And finally, it might make more sense to put the operator precendence information (including the new and improved table with hyperlinks) right on the first page of the operators section (rather than the arithmentic operators information). ------------------------------------------------------------------------ [2002-02-07 09:37:02] hek@loudoun.net This is substantially the same as Bug#15368. ------------------------------------------------------------------------ [2001-06-27 03:37:24] yohgaki@dd.iij4u.or.jp This is a suggestion for improving the manual. (I don't mind at all if you close this :) Reference is for PHP programmers, so I think precidence section is better to include more operators. For example, it does not matter if unary '+/-', array '[]', member selecter '->', etc are treated by parser or internal function for programmers. Programmers don't cares about it when they are programming in some language, right? Important thing for programmers is the precedence itself in some expression. How about add more description for precedence just like other books or references for programming languages? I feel precedence is not described fully in current manual and it's worth the effort. ----Another Releated Suggestion---- I see confusion occasionally in mail lists for variables in string. Since parser behaives differently when parsing variables in strings. This may be one of the reason why '->','[]',unary'+/-' is not in the precedence section. They wouldn't work when they are in a string. (Some of them work with newer PHP, not recommended(?) syntax, though) How about describe these differences in the manual also? ------------------------------------------------------------------------ [2001-06-27 01:49:36] danbeck@php.net Changing description to be more meaningful for someone who wants to tackle this. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/9983 -- Edit this bug report at http://bugs.php.net/?id=9983&edit=1