作为一个开发人员来说，时刻了解目前最流行的开发趋势是很必要的说。最近Tiobe 2009年9月的编程语言排行榜新鲜出炉，PHP首次进入前三，PHP的份额增长0.91%，达到10.156%，名次上升了2位。
前20名的排名如下：
| Position Sep 2009 | Position Sep 2008 | Delta in Position | Programming Language | Ratings Sep 2009 | Delta Sep 2008 | Status |
|---|---|---|---|---|---|---|
| 1 | 1 |  | Java | 19.383% | -1.33% | A |
| 2 | 2 | | C | 16.861% | +1.48% | A |
| 3 | 5 |  | PHP | 10.156% | +0.91% | A |
| 4 | 3 |  | C++ | 9.988% | -0.73% | A |
| 5 | 4 | | (Visual) Basic | 9.196% | -1.29% | A |
| 6 | 7 | | Perl | 4.528% | -0.31% | A |
| 7 | 8 | | C# | 4.186% | -0.15% | A |
| 8 | 6 | | Python | 3.930% | -1.08% | A |
| 9 | 9 | | JavaScript | 2.995% | -0.14% | A |
| 10 | 11 | | Ruby | 2.377% | -0.38% | A |
| 11 | 10 | | Delphi | 1.972% | -1.08% | A |
| 12 | 18 | | Pascal | 0.961% | +0.56% | A |
| 13 | 16 | | Lisp/Scheme | 0.842% | +0.42% | A– |
| 14 | 13 | | PL/SQL | 0.819% | +0.12% | A |
| 15 | 14 | | SAS | 0.781% | +0.14% | A |
| 16 | 24 | | ABAP | 0.705% | +0.42% | A |
| 17 | 12 | | D | 0.588% | -0.68% | B |
| 18 | 42 | | Objective-C | 0.585% | +0.48% | B |
| 19 | 17 | | Lua | 0.507% | +0.09% | B |
| 20 | 25 | | MATLAB | 0.506% | +0.25% | B |
编程语言4年、5年、25年的变迁过程：
| Programming Language | Position Sep 2009 | Position Sep 2005 | Position Sep 1999 | Position Sep 1984 |
|---|---|---|---|---|
| Java | 1 | 1 | 4 | – |
| C | 2 | 2 | 1 | 1 |
| PHP | 3 | 5 | – | – |
| C++ | 4 | 3 | 2 | 11 |
| (Visual) Basic | 5 | 6 | 3 | 4 |
| Perl | 6 | 4 | 11 | – |
| C# | 7 | 7 | 22 | – |
| Python | 8 | 8 | 26 | – |
| JavaScript | 9 | 9 | 21 | – |
| Ruby | 10 | 25 | – | – |
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