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Operators And Expressions MCQ question and answer with solution | PHP Programming

Learn Operators And Expressions MCQ Questions and answers with easy and logical explanations. Operators And Expressions MCQ in PHP programming provides all type of technical mcq questions which is important for technical exams, cumpus exams and other entrance examination Page-2 section-2

Each section contains 100 MCQs on Operators and Expressions in php .
11
What will be the output of the following PHP code ? 
<?php
 $a = 5; $b = -7; $c =0; 
 $d = ++$a && ++$b || ++$c;
 print $d; print $a;
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
1&&0||1 is evaluated to 1 and the a is also preincremented to 6.
12
What will be the output of the following PHP code ? 
<?php
$b = 1; $c = 4; $a = 5; 
$d = $b + $c == $a;
print $d;
?>
Discuss
Answer & Solution
Answer: Option D
Solution:
First b and c are added and then tested if d=5,which is true thus return 1.
13
What will be the output of the following PHP code ? 
<?php
echo 5 * 9 / 3 + 9;
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
Operator precedence order must be followed.
14
What will be the output of the following PHP code ? 
<?php
$var1 = 1 + ++5;
echo $var1; 
?>
Discuss
Answer & Solution
Answer: Option B
Solution:
Operator ++ can be done only on variables.
15
What will be the output of the following PHP code ? 
<?php
$var1 = 0;
$var1 = ($var1 + 5)++; 
echo $var1; 
?>
Discuss
Answer & Solution
Answer: Option B
Solution:
Operator ++ can be done only on variables.
16
What will be the output of the following PHP code ? 
<?php
$var1 = 0;
$var1 = $var1++ + 5; 
echo $var1; 
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
Operator precedence followed.
17
What will be the output of the following PHP code ? 
<?php
$var1 = 0;
$var1 = ++$var1 + 5; 
echo $var1; 
?>
Discuss
Answer & Solution
Answer: Option C
Solution:
Operator precedence followed.
18
What will be the output of the following PHP code ? 
<?php
$var1 = 0;
$var1 = $var1 + 5; 
echo $var1++; 
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
Operator precedence followed,incremented after display.
19
What will be the output of the following PHP code ? 
<?php
$var1 = 1;
echo $var1 = ++$var1 % 2 + ++$var1; 
?>
Discuss
Answer & Solution
Answer: Option D
Solution:
Evaluation done from right to left.
20
What will be the output of the following PHP code ? 
<?php
$var1 = 1;
echo $var1 = ++$var1 % 2 + ++$var1; 
?>
Discuss
Answer & Solution
Answer: Option D
Solution:
Evaluation done from right to left.