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PHP Operators and Expressions

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

error
5
54321
555555555…infinitely

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 5;
$y = 10;
function fun() {
$y = $GLOBALS['x'] + $GLOBALS['y'];
}
fun();
echo $y;

5
Error
15
10

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PHP Operators and Expressions
What will be the output of the following PHP code ?
define("VAR_NAME","test");
${VAR_NAME} = "value";
echo VAR_NAME;
echo ${VAR_NAME};

error, constant value cannot be changed
testvalue
test
testtest

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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;

/
$winner/$looser
/$looser
$looser

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PHP Operators and Expressions
What will be the output of the following PHP code ?
define("NEW_GOOD_NAME_CONSTANT", "I have a value");
define("OLD_BAD_NAME_CONSTANT", NEW_GOOD_NAME_CONSTANT);
echo NEW_GOOD_NAME_CONSTANT;
echo OLD_BAD_NAME_CONSTANT;

I have a value
ERROR
I have a valueI have a value
I have a valueNEW_GOO_NAME_CONSTANTS

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$var1 = 1;
echo $var1 = ++$var1 % 2 + ++$var1;

3
2
1
0

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