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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
$var1 = 1;
echo $var1 = ++$var1 % 2 + ++$var1;

3
0
1
2

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PHP Operators and Expressions
What will be the output of the following PHP code ?
echo $x-- != ++$x;

error
no output
0
1

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PHP Operators and Expressions
What is the output of given statement?Print 17 % 3;

5.67
5.666667
none of above
2

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PHP Operators and Expressions
What will be the output of the following PHP code ?
static $x = 0;
function fun() {
echo $x;
$x++;
}
fun();
fun();
fun();

Error
012
Nothing
123

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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_numeric()
is_number()
is_num()
if_numeric

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$one = "Hello";
$two = "World";
echo $one, $two;

HelloWorld
Hello World
World
Hello

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