Identifying PHP unused variables

I have seen the below question and was wondering if there is something like it for Eclipse.

Also, how can I make sure that this kind of errors gets thrown into my trigger error function, so that I can write it to a log.

How can I identify PHP unused vari开发者_如何学Pythonables (in Emacs)?

---

Not sure it can report unused variables, but PHP_CodeSniffer is nice when it comes to detecting problems in PHP source code.

Still, it's a command-line tool, and it's not integrated in Eclipse PDT...

As a side note:

• Unused variables (i.e., variables that get assigned a value, and are never used again) are not a problem in PHP -- so, they are not reported as an error nor anything by PHP itself
• On the other hand, undeclared variables (i.e., variables that are being read from, while no value was assigned to them before) are not that good -- so, they are reported a notices by the PHP engine.

The post you are linking to is talking about the second kind, and not the first one.

To get undeclared/uninitialized variables reported by the PHP engine:

• You have to enable error_reporting, and configure it so it report E_NOTICE
• You can then have those reports either:
  • displayed in the generated page (nice when developping) : display_errors
  • or logged in a file: log_errors

But, here too, this is not integrated in Eclipse -- and I've never seen a tool that would parse the PHP error log, and push the notices to Eclipse...

---

The NetBeans IDE (I switched from Eclipse PDT last month) identifies and shows warning about unused and uninitialized methods, variables, etc.

---

Have you tried PMD Eclipse yet? According to my colleagues it is a pretty handy tool.

---

Install PDT Extensions.

From the Eclipse (PDT) main menu, select Help → Install New Software.

Then enter the above URL in the 'Work with' edit box. Click Add. Check the 'PDT Extensions' checkbox. Click Next...