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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
$color = red;
echo "$color" . red ;

nothing
error
red
red red

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$i = 5;
while (--$i > 0) {
$i++;
print $i;
print "hello";
}

no output
5hello5hello5hello5hello5hello…..infinite
4hello4hello4hello4hello4hello…..infinite
error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
echo "This", "was", "a", "bad", "idea";

This, was, a, bad, idea
Thiswasabadidea
This was a bad idea
Error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$b = 1;
$c = 4;
$a = 5;
$d = $b + $c == $a;
print $d;

1
10
0
5

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 3.3;
$y = 2;
echo $x % $y;

Error
0
2
1

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PHP Operators and Expressions
What will be the output of the following PHP code ?
print "echo hello world";

hello world
error
nothing
echo hello world

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