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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
$i = 2;
while (++$i) {
while ($i --> 0)
print $i;
}

infinite loop
10
no output
210

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$one = 1;
print($one);
print $one;

10
11
01
Error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$one = "one";
$two = "two";
print($one$two);

onetwo
one
error
nothing

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$var1 = 3;
print $var = ++$var;

1
3
0
2

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = 'a';
print $a * 2;

2
192
error
0

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$cars = array("Volvo", "BMW", "Toyota");
echo "My car is a {$cars[0]}";

Error
My car is a Toyota
My car is a BMW
My car is a Volvo

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