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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： 欧美视频二区 | 亚洲不卡在线观看 | 精品国产青草久久久久96 | 一区二区三区视频 | 亚洲国产精品人人爽夜夜爽 | 久久大陆 | 欧美日韩不卡合集视频 | 亚洲国产一区二区视频 | 久久综合久久久 | 日韩一区精品 | 日韩免费网站 | 日韩在线中文字幕 | 黄色大片视频 | 国产欧美一区二区三区国产幕精品 | 国产精品精品视频一区二区三区 | 国产精品久久久久久婷婷天堂 | 产真a观专区 | 日韩在线日韩 | 国产9 9在线 | 中文 | av播播| 一区二区三区中文字幕 | 人人人人干| 在线视频 亚洲 | 欧美精品一区二区在线观看 | 91麻豆精品国产91久久久更新资源速度超快 | 毛片视频免费 | 日韩在线观看一区 | 成人一区二区三区 | 国产亚洲一区二区精品 | 一区二区三区国产 | 亚洲一区二区久久久 | 久久成人在线视频 | 国产原创在线观看 | 超碰成人在线观看 | 日韩成人免费 | 91人人看 | 碰碰视频 | 精品久久久久久红码专区 | 久久99精品久久久久子伦 | 国产成人精品综合 | 成人高清在线 |