Tag: php

Question 1

What is the difference between print() and echo()?

php

print() can be used as part of an expression, while echo() can't
echo() can be used as part of an expression, while print() can't
echo() can be used in the CLI version of PHP, while print() can't
print() can be used in the CLI version of PHP, while echo() can't

Answer

Correct Option: A

Question 2

What is displayed when the following script is executed?

define(myvalue, "10");
$myarray[10] = "Dog";
$myarray[] = "Human";
$myarray['myvalue'] = "Cat";
$myarray["Dog"] = "Cat";
print "The value is: ";
print $myarray[myvalue]."\\n";

php

The value is: Dog
The value is: Cat
The value is: Human
The value is: 10

Answer

Correct Option: A

Question 3

Which of the following is not valid PHP code?

php

$_10
${"MyVar"}
&$something
$10_somethings

Answer

Correct Option: D

Question 4

Which of the following tags is not a valid way to begin and end a PHP code block?

php

= ?>

Answer

Correct Option: D

Question 5

When turned on, __________ will __________ your script with different variables from HTML forms and cookies.

php

show_errors, enable
show_errors, show
register_globals, enhance
register_globals, inject

Answer

Correct Option: D

Question 6

What is the value of $result in the following PHP code?

function timesTwo($int)
{
  $int = $int * 2;
}

$int = 2;

$result = timesTwo($int);

php

0
2
4
NULL

Answer

Correct Option: D

Question 7

Which of the following prints ‘text/xml’?

php

print substr($text, strchr($text, ':'));
print substr($text, strchr($text, ':') 1);
print substr($text, strpos($text, ':') 1);
print substr($text, strpos($text, ':') 2);

Answer

Correct Option: D

Question 8

What does echo count (“123?) print out?

php

3
false
null
1

Answer

Correct Option: D

Question 9

Which of the following snippets prints a representation of 42 with two decimal places?

php

printf("%.2d\n", 42);
printf("%1.2f\n", 42);
printf("%1.2u\n", 42);
none of the above

Answer

Correct Option: B

Question 10

Which of the following expressions multiply the value of the integer variable $a by 4?

php

$a *= pow (2, 2);
$a >>= 2;
$a <<= 2;
$a = $a $a;

Answer

Correct Option: A,C

Tag: php

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