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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";

$color
red
Error
red

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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;

1
0
3
2

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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;

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

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = '4';
print + + $a;

no output
5
error
0

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$on_e = 1;
$tw_o = 2;
$thre_e = 3;
$fou_r = 4;
echo $on_e / $tw_o + $thre_e / $fou_r;

0.05
0.75
Error
1.25

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$hello = "Hello World";
$bye = "Bye";
echo $hello;
"$bye";

Hello World
Hello worldBye
Bye
Error

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