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Murach's PHP and MySQL, C2© 2010, Mike Murach & Associates, Inc.Slide 1
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Murach's PHP and MySQL, C2© 2010, Mike Murach & Associates, Inc.Slide 2
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Murach's PHP and MySQL, C2© 2010, Mike Murach & Associates, Inc.Slide 3
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Murach's PHP and MySQL, C2© 2010, Mike Murach & Associates, Inc.Slide 4
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Murach's PHP and MySQL, C2© 2010, Mike Murach & Associates, Inc.Slide 5
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Murach's PHP and MySQL, C2© 2010, Mike Murach & Associates, Inc.Slide 6
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Murach's PHP and MySQL, C2© 2010, Mike Murach & Associates, Inc.Slide 7
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Murach's PHP and MySQL, C2© 2010, Mike Murach & Associates, Inc.Slide 8 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional...> Future Value Calculator Future Value Calculator Investment Amount: <input type="text" name="investment" value=" "/> Yearly Interest Rate: <input type="text" name="interest_rate" value=" "/> Number of Years: <input type="text" name="years" value=" "/>
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Murach's PHP and MySQL, C2© 2010, Mike Murach & Associates, Inc.Slide 9 <?php // get the data from the form $investment = $_POST['investment']; $interest_rate = $_POST['interest_rate']; $years = $_POST['years']; // validate investment entry if ( empty($investment) ) { $error_message = 'Investment is a required field.'; } else if ( !is_numeric($investment) ) { $error_message = 'Investment must be a valid number.'; } else if ( $investment <= 0 ) { $error_message = 'Investment must be greater than zero.'; // validate interest rate entry } else if ( empty($interest_rate) ) { $error_message = 'Interest rate is a required field.'; } else if ( !is_numeric($interest_rate) ) { $error_message = 'Interest rate must be a valid number.'; } else if ( $interest_rate <= 0 ) { $error_message = 'Interest rate must be greater than zero.'; // apply currency and percent formatting $investment_f = '$'.number_format($investment, 2); $yearly_rate_f = $interest_rate.'%'; $future_value_f = '$'.number_format($future_value, 2); ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional...> Future Value Calculator Future Value Calculator Investment Amount: Yearly Interest Rate: Number of Years: Future Value:
![Murach s PHP and MySQL, C2© 2010, Mike Murach & Associates, Inc.Slide 9 < php // get the data from the form $investment = $_POST[ investment ]; $interest_rate = $_POST[ interest_rate ]; $years = $_POST[ years ]; // validate investment entry if ( empty($investment) ) { $error_message = Investment is a required field. ; } else if ( !is_numeric($investment) ) { $error_message = Investment must be a valid number. ; } else if ( $investment <= 0 ) { $error_message = Investment must be greater than zero. ; // validate interest rate entry } else if ( empty($interest_rate) ) { $error_message = Interest rate is a required field. ; } else if ( !is_numeric($interest_rate) ) { $error_message = Interest rate must be a valid number. ; } else if ( $interest_rate <= 0 ) { $error_message = Interest rate must be greater than zero. ; // apply currency and percent formatting $investment_f = $ .number_format($investment, 2); $yearly_rate_f = $interest_rate. % ; $future_value_f = $ .number_format($future_value, 2); > <!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional...> Future Value Calculator Future Value Calculator Investment Amount: Yearly Interest Rate: Number of Years: Future Value:](http://images.slideplayer.com/12/3385274/slides/slide_9.jpg "Murach s PHP and MySQL, C2© 2010, Mike Murach & Associates, Inc.Slide 9 < php // get the data from the form $investment = $_POST[ investment ]; $interest_rate = $_POST[ interest_rate ]; $years = $_POST[ years ]; // validate investment entry if ( empty($investment) ) { $error_message = Investment is a required field. ; } else if ( !is_numeric($investment) ) { $error_message = Investment must be a valid number. ; } else if ( $investment <= 0 ) { $error_message = Investment must be greater than zero. ; // validate interest rate entry } else if ( empty($interest_rate) ) { $error_message = Interest rate is a required field. ; } else if ( !is_numeric($interest_rate) ) { $error_message = Interest rate must be a valid number. ; } else if ( $interest_rate <= 0 ) { $error_message = Interest rate must be greater than zero. ; // apply currency and percent formatting $investment_f = $ .number_format($investment, 2); $yearly_rate_f = $interest_rate. % ; $future_value_f = $ .number_format($future_value, 2); > <!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional...> Future Value Calculator Future Value Calculator Investment Amount: Yearly Interest Rate: Number of Years: Future Value:")
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Murach's PHP and MySQL, C2© 2010, Mike Murach & Associates, Inc.Slide 10
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