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PHP Operators and Expressions

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

echo hello world
nothing
hello world
error

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

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PHP Operators and Expressions
The result of both the below expressions in PHP will be same:1) 3+4*22) (3+4)*2

FALSE
TRUE

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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;

1400
104
410
4100

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

3
error
4
5

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

01234567891011121314…infinitely
1234567891011121314….infinitely
error
no output

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