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Online communication is an interview question for PHP programmers at Tencent

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2016-07-25 08:59:28796browse
  1. while (list($k,$v) = each($data)) {

  2. $encoded .= ($encoded ? "$sep" : "");
  3. $encoded .= rawurlencode($k)."=".rawurlencode($v);
  4. }
  5. Return $encoded;
  6. }

  7. Function post($url, $post, $cookie){

  8. $url = parse_url($url);
  9. $post = encode($data, ‘&’);
  10. $cookie = encode($cookieArray, ‘;’);
  11. $fp = fsockopen($url['host'], $url['port'] ? $url['port'] : 80, $errno, $errstr, 10);
  12. if (!$fp) return "Failed to open socket to $url[host]";

  13. fputs($fp, sprintf("POST %s%s%s HTTP/1.0n", $url['path'], $url['query'] ? "?" : "", $url['query']));

  14. fputs($fp, "Host: $url[host]n");
  15. fputs($fp, "Content-type: application/x-www-form-urlencodedn");
  16. fputs($fp, "Content-length: " . strlen($encoded) . "n");
  17. fputs($fp, "Cookie: $cookienn");
  18. fputs($fp, "Connection: closenn");
  19. fputs($fp, "$post n");

  20. while (!feof($fp)) {

  21. echo fgets($fp, 128);
  22. }
  23. fclose($fp);
  24. }

  25. $url = ‘http://bbs.it-home.org:8080/test’;

  26. $encoded = username=温柔一刀& pwd=
  27. $post = array(
  28. ‘username’=> ‘温柔一刀’,
  29. ‘pwd => ‘&123=321&321=123&’,
  30. ‘intro => ‘Hello world!’
  31. );
  32. $cookie = array(
  33. ‘cur_query’ => ‘you&me,
  34. ‘last_tm’ => time() - 600,
  35. ‘cur_tm ‘=> time()
  36. );

  37. Post($url, $post, $cookie);

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11.你用什么方法检查PHP脚本的执行效率(通常是脚本执行时间)和数据库SQL的效率(通常是数据库Query时间),并定位和分析脚本执行和数据库查询的瓶颈所在? 1.脚本执行时间,启用xdebug,使用WinCacheGrind分析。 2.数据库查询,mysql使用EXPLAIN分析查询,启用slow query log记录慢查询。

PHP LAMP Engineer Test Paper Question 1 What does echo count ("123") ?> print out? A) 3 B) False C) Null D) 1 E) 0

Question 2 Which of the following snippets prints a representation of 42 with two decimal places? A) printf("%.2dn", 42); B) printf("%1.2fn", 42); C) printf("%1.2un", 42);

Question 3 Given $text = 'Content-Type: text/xml'; Which of the following prints 'text/xml'? A) print substr($text, strchr($text, ':')); B) print substr($text, strchr($text, ':') + 1); C) print substr($text, strpos($text, ':') + 1); D) print substr($text, strpos($text, ':') + 2); E) print substr($text, 0, strchr($text, ':')

Question 4 What is the value of $a?

  1. $a = in_array('01', array('1')) == var_dump('01' == 1);
  2. ?>
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A) True B) False

Question 5 What is the value of $result in the following PHP code?

  1. function timesTwo($int) {
  2. $int = $int * 2;
  3. }
  4. $int = 2;
  5. $result = timesTwo($int);
  6. ?>;
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Answer: NULL

Question 6 The code below ___________ because ____________.

  1. class Foo {
  2. ?>
  3. function bar() {
  4. print "bar";
  5. }
  6. }
  7. ?>
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A) will work, class definitions can be split up into multiple PHP blocks. B) will not work, class definitions must be in a single PHP block. C) will not work, class definitions must be in a single file but can be in multiple PHP blocks. D) will work, class definitions can be split up into multiple files and multiple PHP blocks.

Question 7 When turned on, ____________ will _________ your script with different variables from HTML forms and cookies. A) show_errors, enable B) show_errors, show C) register_globals, enhance D) register_globals, inject

Question 8 What will be the output of the following PHP code:

  1. echo count(strlen("http://php.net"));
  2. ?>
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Answer: 1

Question 9 What is the best all-purpose way of comparing two strings? A) Using the strpos function B) Using the == operator C) Using strcasecmp() D) Using strcmp()

Question 10 What is the difference between "print()" and "echo()"? Answer: print is a function,echo is a language construct



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