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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
print("this"."was"."a"."bad"."idea");

this was a bad idea
error
thiswasabadidea
nothing

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

Error
0
5
Nothing

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$color1 = "red";
$color2 = "1";
$color3 = "grey";
echo "$color1" + "$color2" . "$color3";

grey
0
1grey
red1grey

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$i = 0;
$j = 0;
if ($i && ($j = $i + 10)) {
echo "true";
}
echo $j;

true0
true10
0
10

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = 10;
echo ++$a;
echo $a++;
echo $a;
echo ++$a;

11111112
11111213
11121213
11111212

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$cars = array("Volvo", "BMW", "Toyota");
print $cars[2];

BMW
Volvo
Toyota
Error

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