full source of simple calculator [ line 1 - 46 ] | download simple calculator
| 1 | <?PHP |
| 2 | if(!$_POST['act']) |
| 3 | { |
| 4 | echo ' |
| 5 | <form method="post" action="'.$_SERVER['PHP_SELF'].'"> |
| 6 | <input type="text" name="z1" size="5"> |
| 7 | <select name="act"> |
| 8 | <option value="add">[ + ]</option> |
| 9 | <option value="sub">[ - ]</option> |
| 10 | <option value="div">[ / ]</option> |
| 11 | <option value="mul">[ * ]</option> |
| 12 | <option value="pro">[ % ]</option> |
| 13 | </select> |
| 14 | <input type="text" name="z2" size="5"> |
| 15 | <input type="submit" name="doit" value="calculate"> |
| 16 | </form> |
| 17 | '; |
| 18 | }else{ |
| 19 | if($_POST['act'] == 'add') |
| 20 | { |
| 21 | $calc = ($_POST['z1']+$_POST['z2']); |
| 22 | $op = '+'; |
| 23 | } |
| 24 | if($_POST['act'] == 'sub') |
| 25 | { |
| 26 | $calc = ($_POST['z1']-$_POST['z2']); |
| 27 | $op = '-'; |
| 28 | } |
| 29 | if($_POST['act'] == 'div') |
| 30 | { |
| 31 | $calc = ($_POST['z1']/$_POST['z2']); |
| 32 | $op = '/'; |
| 33 | } |
| 34 | if($_POST['act'] == 'mul') |
| 35 | { |
| 36 | $calc = ($_POST['z1']*$_POST['z2']); |
| 37 | $op = '*'; |
| 38 | } |
| 39 | if($_POST['act'] == 'pro') |
| 40 | { |
| 41 | $calc = (($_POST['z2']*$_POST['z1'])/100); |
| 42 | $op = '% of'; |
| 43 | } |
| 44 | echo $_POST['z1'].' '.$op.' '.$_POST['z2'].' = '.$calc; |
| 45 | } |
| 46 | ?> |
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