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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
$i = "";
while ($i = 10) {
print "hi";
}
print "hello";

infinite loop
hihello
hello
error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = 10;
$b = 4;
$c = fun(10,4);
function fun($a,$b) {
$b = 3;
return $a - $b + $b - $a;
}
echo $a;
echo $b;
echo $c;

410
1400
104
4100

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$color1 = "red";
$color2 = "1";
echo "$color1" + "$color2";

red1
0
red 1
1

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 3.5;
$y = 2;
$z = 2;
echo $x / $y / $z;

3.5
Error
1.75
0.875

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = '12345';
print "qwe{$a}rty";

no output
error
qwe{$a}rty
qwe12345rty

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = "$winner";
$b = "$looser";
echo $a, $b;

$looser
\
$winner$looser
$looser

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