|
|
1. Which of the following will not add john to the users array?
1. $users[] = 'john';
2. array_add($users,'john'); //wrong
3. array_push($users,'john');
4. $users ||= 'john'; //wrong
2. What's the difference between sort(), asort() and ksort? Under what circumstances would you use each of these?
my an:sort()-排序 asort()-保持key值排序 ksort()-以key順序排序 rsort()-逆排序 arsort()-保持key值逆排序 krsort()-以key逆順序排序
3. What would the following code print to the browser? Why?
$num = 10;
function multiply()
{
$num = $num * 10;
}
multiply();
echo $num;
my an:10 because var scope4. What is the difference between a reference and a regular variable? How do you pass by reference & why would you want to?
5. What functions can you use to add library code to the currently running script?
6. What is the difference between foo() & @foo()?
7. How do you debug a php application?
8. What does === do? What's an example of something that will give true for ‘==', but not ‘==='?
9. How would you declare a class named “myclass” with no methods or properties?
10. How would you create an object, which is an instance of “myclass”?
11. How do you access and set properties of a class from within the class?
12. What is the difference between include & include_once? include & require?
13. What function would you use to redirect the browser to a new page?
1. redir() 2. header() 3. location() 4. redirect()
my an :2
14. What function can you use to open a file for reading and writing?
1. fget(); 2. file_open(); 3. fopen(); 4. open_file();my an :315. What's the difference between mysql_fetch_row() and mysql_fetch_array()?
16. What does the following code do? Explain what's going on there.
$date='08/26/2003'; print ereg_replace(“([0-9]+)/([0-9]+)/([0-9]+)”,2/1/3,$date);17. Given a line of text $string, how would you write a regular expression to strip all the HTML tags from it?
18. What's the difference between the way php and Perl distinguish between arrays and hashes?
19. How can you get round the stateless nature of HTTP using php?
20. What does the GD library do?
21. Name a few ways to output (print) a block of HTML code in php?
22. Is php better than Perl? 主站蜘蛛池模板： 成人亚洲精品 | 久久视频免费看 | 毛片网站在线观看 | 国产精久久久久久 | 久久久国产一区二区三区四区小说 | 欧美精品一区在线 | 日韩av网址在线观看 | 色爱区综合 | 欧美日韩在线综合 | 国产精品毛片无码 | 日本三级精品 | 久久com| 欧美1区2区 | 国产一在线观看 | 国产一区三区视频 | 91精品国产手机 | 中文字幕日韩一区 | 在线观看黄色 | 成人午夜免费在线视频 | 欧美日韩中文字幕在线 | 欧美视频在线播放 | 国产高清视频 | 久久国产亚洲精品 | 久久精品久久综合 | 亚洲精品成人在线 | 午夜精品一区二区三区在线播放 | 国产精品18久久久久久白浆动漫 | 亚洲综合色自拍一区 | 日韩高清中文字幕 | www.中文字幕.com | 久久最新 | 精品91久久| 国产黄色大片 | 精品国产乱码久久久久久闺蜜 | 古装人性做爰av网站 | 一级大片网站 | 国产成人精品一区二区三区视频 | 国产视频久久久 | 亚洲精品一 | 日韩久久中文字幕 | 黄色大片在线免费观看 |