ereg preg_match 
ereg_replace preg_replace

2． 请说明在php.ini中safe_mode开启之后对于PHP系统函数的影响

3． PHP5中魔术方法函数有哪几个，请举例说明各自的用法

__sleep 
__wakeup 
__toString 
__set_state 
__construct, 
__destruct 
__call, 
__get, 
__set, 
__isset, 
__unset 
__sleep, 
__wakeup, 
__toString, 
__set_state, 
__clone 
__autoload

4． 请写出让，并说明如何在命令行下运行PHP脚本（写出两种方式）同时向PHP脚本传递参数？

5． PHP的垃圾收集机制是怎样的

6．使对象可以像数组一样进行foreach循环，要求属性必须是私有。 
(Iterator模式的PHP5实现，写一类实现Iterator接口)

7．请写一段PHP代码，确保多个进程同时写入同一个文件成功

8． 用PHP实现一个双向队列

9． 使用正则表达式提取一段标识语言（html或xml）代码段中指定标签的指定属性值（需考虑属性值对不规则的情况，如大小写不敏感，属性名值与等号间有空格等）。此处假设需提取test标签的attr属性值，请自行构建包含该标签的串

<test attr=”ddd”>

<test attr\s*=\s*[“ ¦’](.*?)[” ¦’].*?>

10．请使用socket相关函数（非curl）实现如下功能：构造一个post请求，发送到指定http server的指定端口的指定请求路径（如http://www.example.com:8080/test）。请求中包含以下变量：

用户名（username）：温柔一刀 
密码（pwd）：&123=321&321=123& 
个人简介（intro）：Hello world!

且该http server需要以下cookie来进行简单的用户动作跟踪：

cur_query：you&me 
last_tm：...（上次请求的unix时间戳，定为当前请求时间前10分钟） 
cur_tm：...（当前请求的unix时间戳）

设置超时为10秒，发出请求后，将http server的响应内容输出。复制内容到剪贴板代码:
Function encode($data, $sep = ‘&’){ 
while (list($k,$v) = each($data)) { 
$encoded .= ($encoded ? "$sep" : ""); 
$encoded .= rawurlencode($k)."=".rawurlencode($v); 
} 
Return $encoded; 
}

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]";

fputs($fp, sprintf("POST %s%s%s HTTP/1.0\n", $url['path'], $url['query'] ? "?" : "", $url['query'])); 
fputs($fp, "Host: $url[host]\n"); 
fputs($fp, "Content-type: application/x-www-form-urlencoded\n"); 
fputs($fp, "Content-length: " . strlen($encoded) . "\n"); 
fputs($fp, "Cookie: $cookie\n\n"); 
fputs($fp, "Connection: close\n\n"); 
fputs($fp, "$post \n");

while (!feof($fp)) { 
echo fgets($fp, 128); 
} 
fclose($fp); 
}

$url = ‘[url]http://www.example.com:8080/test[/url]’; 
$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() 
);

Post($url, $post, $cookie); 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("%.2d\n", 42); 
B) printf("%1.2f\n", 42); 
C) printf("%1.2u\n", 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