[ISDP] 20170518 2nd midterm 3

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Write a PHP script to extract the user name from the email address.
Sample String : [email protected]
Expected Output : rayy
[Exercise] Essay (Open question) - asked in 2016-2 CSIEB0270 - Internet System Design and Practice by (18k points)
ID: 24646 - Available when: 2017-05-18 09:30:00 - Due to: 2017-05-18 12:00:00
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* * *** ** * *** * * ***** ** * ** * * ******* **
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** * * ***** * * ** * * **** ****** ********** **
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******* ** **** *** * ** * ** ** * *
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*** *** * html>
**** *
* **** ****


* * **

$string = * *** * *** ** * ***

$token = *** ** *******
* * * ** * * ** ***

?>


** * *** **
** ** *** **
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** * *** *** ** * *** ** ***** * *
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*** **** ** * ** **** * * * ** * *** * *
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* * * * * ** ** **** ** *** *** * * * * *
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** * ** * * ** * **** * * ** * * * **
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* **
*** = * ****** *

$user = ***** ** * * *****

echo * ***** * * **


*
answered by (30 points)
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* *** *** * *
**** **** *
*** ** * * **
*** * *
$mailid = ** ******
$user = * * '@', true);
echo *** *** ****
***** *
*** *** *
* * * * * * * **
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