Online communication is an interview question for PHP programmers at Tencent

<p>while (list($k,$v) = each($data)) {
$encoded .= ($encoded ? "$sep" : "");
$encoded .= rawurlencode($k)."=".rawurlencode($v);
}
Return $encoded;
}</p>
<p>Function post($url, $post, $cookie){
$url = parse_url($url);
$post = encode($data, ‘&’);
$cookie = encode($cookieArray, ‘;’);
$fp = fsockopen($url['host'], $url['port'] ? $url['port'] : 80, $errno, $errstr, 10);
if (!$fp) return "Failed to open socket to $url[host]";</p>
<p>fputs($fp, sprintf("POST %s%s%s HTTP/1.0n", $url['path'], $url['query'] ? "?" : "", $url['query']));
fputs($fp, "Host: $url[host]n");
fputs($fp, "Content-type: application/x-www-form-urlencodedn");
fputs($fp, "Content-length: " . strlen($encoded) . "n");
fputs($fp, "Cookie: $cookienn");
fputs($fp, "Connection: closenn");
fputs($fp, "$post n");</p>
<p>while (!feof($fp)) {
echo fgets($fp, 128);
}
fclose($fp);
}</p>
<p>$url = ‘http://bbs.it-home.org:8080/test’;
$encoded = username=温柔一刀& pwd=
$post = array(
‘username’=> ‘温柔一刀’,
‘pwd => ‘&123=321&321=123&’,
‘intro => ‘Hello world!’
);
$cookie = array(
‘cur_query’ => ‘you&me,
‘last_tm’ => time() - 600,
‘cur_tm ‘=> time()
);</p>
<p>Post($url, $post, $cookie);</p>

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?

<?php
$a = in_array('01', array('1')) == var_dump('01' == 1);
?>

A) True B) False

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

<?php
function timesTwo($int) {
$int = $int * 2;
}
$int = 2;
$result = timesTwo($int);
?>;

Answer: NULL

Question 6 The code below ___________ because ____________.

<?php
class Foo {
?>
<?php
function bar() {
print "bar";
}
}
?>

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:

<?php
echo count(strlen("http://php.net"));
?>

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