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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
echo "This is India";

Error
This is
This is India
This is India

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

red1
red 1
1
0

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PHP Operators and Expressions
In order to find if a variable holds an actual number or a string containing characters that can be translated into a number you can use:

is_number()
is_num()
if_numeric
is_numeric()

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PHP Operators and Expressions
What will be the output of the following PHP code ?
echo "Hello World"

Hello world in italics
Hello world
Error
Nothing

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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 ?
$i = 0;
$j = 0;
if ($i && ($j = $i + 10)) {
echo "true";
}
echo $j;

true0
0
10
true10

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