Certainly! PHP exceptions are a mechanism to handle error conditions in a graceful and manageable way, without resorting to traditional error-handling methods such as condition checks or custom error functions.
In PHP, exceptions are represented by the `Exception` class or classes that derive from it. Here's how the general flow works:
try {
// Code that may throw an exception
$denominator = 0;
if ($denominator == 0) {
throw new Exception("Division by zero.");
}
$result = 10 / $denominator;
} catch (Exception $e) {
// Code to handle the exception
echo 'Caught exception: ', $e->getMessage(), "\n";
}
You can have multiple `catch` blocks for different types of exceptions:
try {
// Some code...
} catch (FirstTypeOfException $e) {
// Handle first type
} catch (SecondTypeOfException $e) {
// Handle second type
}
Regardless of whether an exception is thrown, you can ensure a block of code is always executed using the `finally` block:
try {
// Some code...
} catch (Exception $e) {
// Handle exception
} finally {
// This code is always executed
echo "Always runs.";
}
You can create your own exception types by extending the `Exception` class:
class MyCustomException extends Exception {}
try {
throw new MyCustomException("This is a custom exception.");
} catch (MyCustomException $e) {
echo $e->getMessage();
}
You can set the default exception handler if an uncaught exception occurs:
function myExceptionHandler($exception) {
echo "Uncaught exception: " . $exception->getMessage();
}
set_exception_handler('myExceptionHandler');
You can catch and rethrow exceptions, possibly after logging them or converting them to a different type:
try {
// Some code...
} catch (Exception $e) {
// Log the exception or perform some actions
throw $e; // Rethrow the same exception
}
UPCET Exam
Click Here
SAAT Exam
Click Here
MHT CET Exam
Click Here
IPU CET Exam
Click Here
KCET Exam
Click Here
COMEDK UG Exam
Click Here
VITEEE Exam
Click Here
BITSAT
Click Here
DSAT: Dayanand Sagar Admission Test
Click Here
Career In Animation in india
Click Here
Merchant Navy Courses in india
Click Here
Interior Design Career in india
Click Here
UGC NET Exam
Click Here
B. Ed Exam
Click Here
AFCAT - Air Force Common Admission Test
Click Here
GATE Exam
Click Here
Joint Entrance Examination (JEE)
Click Here
Common Admission Test (CAT)
Click Here
CDS - Combined Defence Services Exam
Click Here