PHP Exceptions Examples

PHP exception handling and error management.

Throw an Exception

                
                    <?php
                    function divide($dividend, $divisor) {
                      if($divisor == 0) {
                        throw new Exception("Division by zero");
                      }
                      return $dividend / $divisor;
                    }
                    
                    echo divide(5, 0);
                    ?>
                
                

PHP Exceptions Examples

PHP exception handling and error management.

Use try..catch to show a message when an exception is thrown

                
                    <?php
                    function divide($dividend, $divisor) {
                      if($divisor == 0) {
                        throw new Exception("Division by zero");
                      }
                      return $dividend / $divisor;
                    }
                    
                    try {
                      echo divide(5, 0);
                    } catch(Exception $e) {
                      echo "Unable to divide.";
                    }
                    ?>
                
                

Use finally

                
                    <?php
                    function divide($dividend, $divisor) {
                      if($divisor == 0) {
                        throw new Exception("Division by zero");
                      }
                      return $dividend / $divisor;
                    }
                    
                    try {
                      echo divide(5, 0);
                    } catch(Exception $e) {
                      echo "Unable to divide. ";
                    } finally {
                      echo "Process complete.";
                    }
                    ?>
                
                

Output information about an exception that was thrown

                
                    <?php
                    function divide($dividend, $divisor) {
                      if($divisor == 0) {
                        throw new Exception("Division by zero", 1);
                      }
                      return $dividend / $divisor;
                    }
                    
                    try {
                      echo divide(5, 0);
                    } catch(Exception $ex) {
                      $code = $ex->getCode();
                      $message = $ex->getMessage();
                      $file = $ex->getFile();
                      $line = $ex->getLine();
                      echo "Exception thrown in $file on line $line: [Code $code]
                      $message";
                    }
                    ?>