PHP Increment and Decrement Operators

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PHP Increment and Decrement Operators - Part 2

Notes:

PHP Increment and Decrement Operators - Part 2

Increment and Decrement Operators: are used to increment or decrement a variable value by 1.

++ : Increment Operator : is used to increment a variable value by 1
Post Increment : variableName ++
Pre Increment : ++ variableName

-- : Decrement Operator : is used to decrement a variable value by 1
Post Decrement: variableName --
Pre Decrement : -- variableName

Example code2:
// actual code
$a = 10;
echo "a=",$a," "; // 10
echo "a=",$a++," "; // 10
echo "a=",$a," "; // 11

// behind the scene code
$a = 10;
echo "a=",$a," "; // 10
echo "a=",$a=$a," "; // 10
$a=$a+1; echo "a=",$a," "; // 11

// actual code
$a = 10;
echo "a=",$a," "; // 10
echo "a=",++$a," "; // 11
echo "a=",$a," "; // 11

// behind the scene code
$a = 10;
echo "a=",$a," "; // 10
echo "a=",$a=$a+1," "; // 11
$a=$a; echo "a=",$a," "; // 11

// actual code
$a = 10;
echo "a=",$a," "; // 10
echo "a=",$a--," "; // 10
echo "a=",$a," "; // 9

// behind the scene code
$a = 10;
echo "a=",$a," "; // 10
echo "a=",$a=$a," "; // 10
$a=$a-1; echo "a=",$a," "; // 9

// actual code
$a = 10;
echo "a=",$a," "; // 10
echo "a=",--$a," "; // 9
echo "a=",$a," "; // 9

// behind the scene code
$a = 10;
echo "a=",$a," "; // 10
echo "a=",$a=$a-1," "; //9
$a=$a; echo "a=",$a," "; // 9

Interview Questions:

1. PHP stands for ______________
a. Hypertext Preprocessor
b. Preprocessor Hypertext
c. Personal Home Processor
d. Personal Hypertext processor
Ans: a

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