PHP Conditions

In PHP, conditions are used to make decisions based on different scenarios or criteria. These decisions control the flow of execution in a PHP script. Here’s an overview of PHP conditions along with examples:

Comparison Operators:

PHP provides several comparison operators to compare values. Some common ones include:

• Equal to (==): Checks if two values are equal.
• Not equal to (!=): Checks if two values are not equal.
• Identical (===): Checks if two values are equal and of the same data type.
• Not identical (!==): Checks if two values are not equal or not of the same data type.
• Greater than (>): Checks if one value is greater than another.
• Less than (<): Checks if one value is less than another.
• Greater than or equal to (>=): Checks if one value is greater than or equal to another.
• Less than or equal to (<=): Checks if one value is less than or equal to another.

Logical Operators:

PHP also provides logical operators to combine conditions. Some common ones include:

• AND (&&): Returns true if both conditions are true.
• OR (||): Returns true if at least one of the conditions is true.
• NOT (!): Returns true if the condition is false, and false if the condition is true.

Example of PHP Conditions:

• $age = 25;
if ($age >= 18) {
 echo "You are an adult.";
} else {
 echo "You are a minor.";
}

Nested Conditions:

You can also nest conditions within each other for more complex logic.

• $score = 85;
if ($score >= 90) {
 echo "You got an A.";
} elseif ($score >= 80) {
 echo "You got a B.";
} elseif ($score >= 70) {
 echo "You got a C.";
} else {
 echo "You need to improve your score.";
}

Ternary Operator:

The ternary operator provides a shorthand way to write simple if-else statements.

• $age = 20;
$message = ($age >= 18) ? "You are an adult." : "You are a minor.";
echo $message;

Switch Statement:

The switch statement is used to perform different actions based on different conditions.

$day = "Monday";
switch ($day) {
 case "Monday":
  echo "It's the start of the week.";
  break;
 case "Friday":
  echo "It's almost the weekend!";
  break;
 default:
  echo "It's just another day.";
}

PHP conditions are essential for controlling the flow of execution in PHP scripts, allowing you to make decisions based on specific conditions or criteria. They enable you to create dynamic and responsive applications that react differently based on different scenarios.