A simplified PHP checklist covering variables and operators, with examples and outputs for easy understanding.

1.Checklist for PHP Programming – Variables and Operators:

• Variable Declaration and Initialization:

• Use the $ symbol to declare variables.
• Assign values using =

<?php
$name = "John";
$age = 25;
?>

output:-jhon, 25

2.Data Types:

Understand different data types (integers, floats, strings, booleans.

<?php
$integerVar = 10;
$floatVar = 3.14;
$stringVar = "Hello";
$boolVar = true;
?>

3.Arithmetic Operators:

Use +, -, *, /, % for addition, subtraction, multiplication, division, and modulus.

<?php
$result = 5 + 3;
echo $result;
?>

output:-

4.Comparison Operators:

Employ ==, ===, !=, !==, <, >, <=, >= for comparisons.

<?php
$num1 = 10;
$num2 = "10";
var_dump($num1 == $num2); // Output: true
var_dump($num1 === $num2); // Output: false
?>

5.Logical Operators:

Use &&, ||, ! for logical AND, OR, and NOT.

<?php
$x = true;
$y = false;
echo ($x && $y); 
echo ($x || $y); 
echo !$x;        
?>

Output: false

Output: true

Output: false

Checklist for PHP Programming – If-Else Statements:

Conditional Statements:

Use if, else if, and else for conditional execution.

<?php
$age = 18;

if ($age < 18) {
    echo "Minor";
} elseif ($age >= 18 && $age < 65) {
    echo "Adult";
} else {
    echo "Senior";
}
?>

output:- Adult

Switch Statement:

Implement the switch statement for multiple conditions.

<?php
$day = "Monday";

switch ($day) {
    case "Monday":
        echo "Start of the week";
        break;
    case "Friday":
        echo "End of the week";
        break;
    default:
        echo "Midweek";
}
?>

output-Start of the week…..