 | PHP > Conditional Logic |  |
Conditional logic in PHP, including if statements, switch statements, and logical operators like if-else, and, and or, allows you to control the flow of your code based on specific conditions. By mastering these concepts, you can create more dynamic and flexible PHP applications.
| If Statements | |
If statements allow you to execute certain blocks of code conditionally based on whether a specified condition evaluates to true or false.
$age = 25;
if ($age < 18) {
echo "You are a minor.";
} elseif ($age >= 18 && $age < 65) {
echo "You are an adult.";
} else {
echo "You are a senior citizen.";
}
| Switch Statements | |
Switch statements provide an alternative way to evaluate multiple conditions against a single value.
$day = "Monday";
switch ($day) {
case "Monday":
echo "It's Monday!";
break;
case "Tuesday":
echo "It's Tuesday!";
break;
// More cases...
default:
echo "It's not a weekday.";
}
| Logical Operators | |
1. If-Else:
If-else statements allow you to execute different blocks of code based on whether a condition is true or false.
$hour = date("H");
if ($hour < 12) {
echo "Good morning!";
} else {
echo "Good afternoon!";
}
2. And (&&) Operator
The and (&&) operator checks if both conditions on its left and right sides are true.
$age = 25;
$gender = "male";
if ($age >= 18 && $gender == "male") {
echo "You are an adult male.";
}
3. Or (||) Operator
The or (||) operator checks if either condition on its left or right side is true.
$day = "Saturday";
if ($day == "Saturday" || $day == "Sunday") {
echo "It's the weekend!";
}
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