选择题腾讯php

Question 1 What does print out? D
A) 3 B) False C) Null D) 1 E) 0
Question 2 A 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 C 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? A
A) True
B) False
Question 5 What is the value of $result in the following PHP code? ;
Question 6 The code below ___________ because ____________. C

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.