PHP Practice

Problem 1:

Welcome to PHP

Problem 2:

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Problem 3:

The area of the wall is 210 * 50 = 10500. The wall would require 10500 / 90 cans, or 117 cans.

Problem 4:

The password is: I-L0ve-Servers. The encrypted password is: bfcae41b77c181b1f13565ae5e4100df

Problem 6:

Problem 7: