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1.
$a = 3;
$b = 2;
echo (int)$a/(int)$b
为什么输出是 1.5?
2.
How can you hide the fact that web pages are written in PHP?
a. By using AddType application/X-httpd-php asp
b. Specify all file names without any dot and extension
c. By using .htaccess diretive in Apeche
d. All of the above
3.
解释一下Using Register Globals。
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