The if statement is used in PHP to execute a block of code if the specified condition is true. Here is the basic syntax for using if in PHP:
if (condition) {
// code to execute if condition is true
}
Here are some examples:
Example 1: Check if a variable is greater than 10 and execute some code if true
$num = 15;
if ($num > 10) {
echo "The number is greater than 10";
}
Output:
The number is greater than 10
Example 2: Check if a user is logged in and display different content based on the result
$userLoggedIn = true;
if ($userLoggedIn) {
echo "Welcome, user!";
} else {
echo "Please log in to access content";
}
Output:
Welcome, user!
Example 3: Check if an array contains a specific value and execute some code if true
$fruits = array("apple", "banana", "orange");
if (in_array("banana", $fruits)) {
echo "Found banana in the array";
}
Output:
Found banana in the array
Example 4: Check if two variables are equal and execute some code if true
$name = "John";
$otherName = "Jane";
if ($name == $otherName) {
echo "The names are the same";
} else {
echo "The names are different";
}
Output:
The names are different