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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?

Error
Hello World
Missing semicolon error
Nothing

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

no output
error
qwe12345rty
qwe{$a}rty

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PHP Operators and Expressions
What will be the output of the following PHP code ?
define("GREETING", "PHP is a scripting language");
echo $GREETING;

GREETING
$GREETING
no output
PHP is a scripting language

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 5;
{
$x = 10;
echo "$x";
}
echo "$x";

error
105
510
1010

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

1
0
11
2

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 4;
$y = 3;
function fun($x = 3, $y = 4) {
$z = $x+$y/$y+$x;
echo "$z";
}
echo $x;
echo $y;
echo $z;
fun($x, $y);

43
439
943
349

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