Exceptions in PHP: The exception is the one that describes the error or unexpected behavior of the PHP script. The exception is thrown in many PHP tasks and classes. User-defined tasks and classes can also do differently. The exception is a good way to stop work when it comes to data that it can use.
Throw Exceptions in PHP: The throw statement in PHP allows for a defined function or method to do otherwise. If alternatives are thrown, the following code will not be used. If the exception is not detected, a dangerous error will occur with the message “Uncaught Exception”.
Example 1:
<?php function division_operation( $dividend , $divisor ) {
if ( $divisor == 0) {
throw new Exception( "Divide by Zero Error" );
}
return $dividend / $divisor ;
} echo division_operation(12, 0);
?> |
Output:
Example 2: The following example demonstrates the use of the PHP try…catch statement to avoid the above scenario.
<?php function division_operation( $dividend , $divisor ) {
if ( $divisor == 0) {
throw new Exception( "Raise Exception : Division by 0" );
}
return $dividend / $divisor ;
} try {
echo division_operation(12, 0);
} catch (Exception $e ) {
echo "Exception is Caught! : Unable to divide by 0" ;
} ?> |
Output:
Exception is Caught! : Unable to divide by 0
Handling exceptions using try … catch … finally:
Example 3: In the following code, whatever is present in the “finally” statement will be executed regardless of the exception.
<?php function division_operation( $dividend , $divisor ) {
if ( $divisor == 0) {
throw new Exception( "Raise Exception : Division by 0" );
}
return $dividend / $divisor ;
} try {
echo division_operation(12, 0);
} catch (Exception $e ) {
echo "Exception is Caught! : Unable to divide by 0........" ;
} finally { echo "Finally block execution - Process complete." ;
} ?> |
Output:
Exception is Caught! : Unable to divide by 0........Finally block execution - Process complete.