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File: calculator.php
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Content type: text/plain
Description: Calculator PHP file - generated with html2php program
Class: calculator.php
Author: By
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Date: 21 years ago
Size: 12,262 bytes
 

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<?php /* ** History of this class: ** This class was originally a HTML file from - ** http://www.femalenerd.com/javascript/calculator.html ** and I used HTML2php program to convert the HTML file to php program. ** The class 'HTML2php' is also available from - ** http://phpclasses.upperdesign.com/browse.html/author/35463 ** To make any changes you must first change the calculator.html file, ** test it and then use HTML2php and change the display() function in ** this class. ** ** USAGE: //include_once("calculator.php"); require_once("calculator.php"); $calc = new calculator; $calc->display(); */ class calculator { function display() { print("<HTML>\n"); print("<HEAD>\n"); print("<TITLE>JavaScript Calculator</TITLE>\n"); print("<SCRIPT LANGUAGE='JavaScript'>\n"); print("/**************************************\n"); print(" * http://www.femalenerd.com/javascript/calculator.html *\n"); print(" **************************************/\n"); print("\n"); print("// Declare global variables\n"); print("var displayText = \"\"\n"); print("var num1\n"); print("var num2\n"); print("var operatorType\n"); print("\n"); print("// Write to display\n"); print("function addDisplay(n){\n"); print("document.calc.display.value = \"\"\n"); print("displayText += n\n"); print("document.calc.display.value = displayText\n"); print("}\n"); print("\n"); print("// Addition\n"); print("function addNumbers() {\n"); print("if (displayText == \"\") {\n"); print(" displayText = result\n"); print(" }\n"); print("num1 = parseFloat(displayText)\n"); print("operatorType = \"add\"\n"); print("displayText = \"\"\n"); print("}\n"); print("\n"); print("// Subtraction\n"); print("function subtractNumbers() {\n"); print("if (displayText == \"\") {\n"); print(" displayText = result\n"); print(" }\n"); print("num1 = parseFloat(displayText)\n"); print("operatorType = \"subtract\"\n"); print("displayText = \"\"\n"); print("}\n"); print("\n"); print("// Multiplication\n"); print("function multiplyNumbers() {\n"); print("if (displayText == \"\") {\n"); print(" displayText = result\n"); print(" }\n"); print("num1 = parseFloat(displayText)\n"); print("operatorType = \"multiply\"\n"); print("displayText = \"\"\n"); print("}\n"); print("\n"); print("// Division\n"); print("function divideNumbers() {\n"); print("if (displayText == \"\") {\n"); print(" displayText = result\n"); print(" }\n"); print("num1 = parseFloat(displayText)\n"); print("operatorType = \"divide\"\n"); print("displayText = \"\"\n"); print("}\n"); print("\n"); print("// Sine\n"); print("function sin() {\n"); print("if (displayText == \"\") {\n"); print(" num1 = result\n"); print(" }\n"); print("else {\n"); print(" num1 = parseFloat(displayText)\n"); print(" }\n"); print("if (num1 != \"\") {\n"); print(" result = Math.sin(num1)\n"); print(" document.calc.display.value = result\n"); print(" displayText = \"\"\n"); print(" }\n"); print("else {\n"); print(" alert(\"Please write the number first\")\n"); print(" }\n"); print("}\n"); print("\n"); print("// Cosine\n"); print("function cos() {\n"); print("if (displayText == \"\") {\n"); print(" num1 = result\n"); print(" }\n"); print("else {\n"); print(" num1 = parseFloat(displayText)\n"); print(" }\n"); print("if (num1 != \"\") {\n"); print(" result = Math.cos(num1)\n"); print(" document.calc.display.value = result\n"); print(" displayText = \"\"\n"); print(" }\n"); print("else {\n"); print(" alert(\"Please write the number first\")\n"); print(" }\n"); print("}\n"); print("\n"); print("// ArcSine\n"); print("function arcSin() {\n"); print("if (displayText == \"\") {\n"); print(" num1 = result\n"); print(" }\n"); print("else {\n"); print(" num1 = parseFloat(displayText)\n"); print(" }\n"); print("if (num1 != \"\") {\n"); print(" result = Math.asin(num1)\n"); print(" document.calc.display.value = result\n"); print(" displayText = \"\"\n"); print(" }\n"); print("else {\n"); print(" alert(\"Please write the number first\")\n"); print(" }\n"); print("}\n"); print("\n"); print("// ArcCosine\n"); print("function arcCos() {\n"); print("if (displayText == \"\") {\n"); print(" num1 = result\n"); print(" }\n"); print("else {\n"); print(" num1 = parseFloat(displayText)\n"); print(" }\n"); print("if (num1 != \"\") {\n"); print(" result = Math.acos(num1)\n"); print(" document.calc.display.value = result\n"); print(" displayText = \"\"\n"); print(" }\n"); print("else {\n"); print(" alert(\"Please write the number first\")\n"); print(" }\n"); print("}\n"); print("\n"); print("// Square root\n"); print("function sqrt() {\n"); print("if (displayText == \"\") {\n"); print(" num1 = result\n"); print(" }\n"); print("else {\n"); print(" num1 = parseFloat(displayText)\n"); print(" }\n"); print("if (num1 != \"\") {\n"); print(" result = Math.sqrt(num1)\n"); print(" document.calc.display.value = result\n"); print(" displayText = \"\"\n"); print(" }\n"); print("else {\n"); print(" alert(\"Please write the number first\")\n"); print(" }\n"); print("}\n"); print("\n"); print("// Square number (number to the power of two)\n"); print("function square() {\n"); print("if (displayText == \"\") {\n"); print(" num1 = result\n"); print(" }\n"); print("else {\n"); print(" num1 = parseFloat(displayText)\n"); print(" }\n"); print("if (num1 != \"\") {\n"); print(" result = num1 * num1\n"); print(" document.calc.display.value = result\n"); print(" displayText = \"\"\n"); print(" }\n"); print("else {\n"); print(" alert(\"Please write the number first\")\n"); print(" }\n"); print("}\n"); print("\n"); print("// Convert degrees to radians\n"); print("function degToRad() {\n"); print("if (displayText == \"\") {\n"); print(" num1 = result\n"); print(" }\n"); print("else {\n"); print(" num1 = parseFloat(displayText)\n"); print(" }\n"); print("if (num1 != \"\") {\n"); print(" result = num1 * Math.PI / 180\n"); print(" document.calc.display.value = result\n"); print(" displayText = \"\"\n"); print(" }\n"); print("else {\n"); print(" alert(\"Please write the number first\")\n"); print(" }\n"); print("}\n"); print("\n"); print("// Convert radians to degrees\n"); print("function radToDeg() {\n"); print("if (displayText == \"\") {\n"); print(" num1 = result\n"); print(" }\n"); print("else {\n"); print(" num1 = parseFloat(displayText)\n"); print(" }\n"); print("if (num1 != \"\") {\n"); print(" result = num1 * 180 / Math.PI\n"); print(" document.calc.display.value = result\n"); print(" displayText = \"\"\n"); print(" }\n"); print("else {\n"); print(" alert(\"Please write the number first\")\n"); print(" }\n"); print("}\n"); print("\n"); print("// Calculations\n"); print("function calculate() {\n"); print("if (displayText != \"\") {\n"); print(" num2 = parseFloat(displayText)\n"); print("// Calc: Addition\n"); print(" if (operatorType == \"add\") {\n"); print(" result = num1 + num2\n"); print(" document.calc.display.value = result\n"); print(" }\n"); print("// Calc: Subtraction\n"); print(" if (operatorType == \"subtract\") {\n"); print(" result = num1 - num2\n"); print(" document.calc.display.value = result\n"); print(" }\n"); print("// Calc: Multiplication\n"); print(" if (operatorType == \"multiply\") {\n"); print(" result = num1 * num2\n"); print(" document.calc.display.value = result\n"); print(" }\n"); print("// Calc: Division\n"); print(" if (operatorType == \"divide\") {\n"); print(" result = num1 / num2\n"); print(" document.calc.display.value = result\n"); print(" }\n"); print(" displayText = \"\"\n"); print(" }\n"); print(" else {\n"); print(" document.calc.display.value = \"Oops! Error!\"\n"); print(" }\n"); print("}\n"); print("\n"); print("// Clear the display\n"); print("function clearDisplay() {\n"); print("displayText = \"\"\n"); print("document.calc.display.value = \"\"\n"); print("}\n"); print("</SCRIPT>\n"); print("</HEAD>\n"); print("<BODY BGCOLOR=\"#FFFFFF\" LINK=\"#9C6060\">\n"); print("\n"); print("<TABLE>\n"); print("<TD> \n"); print("<TABLE BORDER=0 BGCOLOR=\"#AF9999\">\n"); print("<TD>\n"); print("<TABLE border=\"0\" cellpadding=\"2\" cellspacing=\"2\">\n"); print("<FORM NAME=calc>\n"); print("\n"); print("<!--\n"); print("<TR><TD VALIGN=top colspan=6 ALIGN=\"center\"> <H2>Calculator</H2> </TD>\n"); print("-->\n"); print("<TR>\n"); print(" <TD COLSPAN=5><INPUT TYPE=text SIZE=22 NAME=display></TD>\n"); print("<TR align=\"left\" valign=\"middle\">\n"); print(" <TD><INPUT TYPE=button NAME=\"one\" VALUE=\" 1 \" onClick=addDisplay(1)></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"two\" VALUE=\" 2 \" onClick=addDisplay(2)></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"three\" VALUE=\" 3 \" onClick=addDisplay(3)></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"plus\" VALUE=\" + \" onClick=addNumbers()></TD>\n"); print("<TR align=\"left\" valign=\"middle\">\n"); print(" <TD><INPUT TYPE=button NAME=\"four\" VALUE=\" 4 \" onClick=addDisplay(4)></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"five\" VALUE=\" 5 \" onClick=addDisplay(5)></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"six\" VALUE=\" 6 \" onClick=addDisplay(6)></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"minus\" VALUE=\" - \" onClick=subtractNumbers()></TD>\n"); print("<TR align=\"left\" valign=\"middle\">\n"); print(" <TD><INPUT TYPE=button NAME=\"seven\" VALUE=\" 7 \" onClick=addDisplay(7)></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"eight\" VALUE=\" 8 \" onClick=addDisplay(8)></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"nine\" VALUE=\" 9 \" onClick=addDisplay(9)></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"multiplication\" VALUE=\" * \" onClick=multiplyNumbers()></TD>\n"); print("<TR align=\"left\" valign=\"middle\">\n"); print(" <TD><INPUT TYPE=button NAME=\"zero\" VALUE=\" 0 \" onClick=addDisplay(0)></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"pi\" VALUE = \" Pi \" onClick=addDisplay(Math.PI)> </TD> \n"); print(" <TD><INPUT TYPE=button NAME=\"dot\" VALUE=\" . \" onClick=addDisplay(\".\")></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"division\" VALUE=\" / \" onClick=divideNumbers()></TD>\n"); print("<TR align=\"left\" valign=\"middle\">\n"); print(" <TD><INPUT TYPE=button NAME=\"sqareroot\" VALUE=\"sqrt\" onClick=sqrt()></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"squarex\" VALUE=\" x^2\" onClick=square()></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"deg-rad\" VALUE=\"d2r \" onClick=degToRad()></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"rad-deg\" VALUE=\"r2d \" onClick=radToDeg()></TD>\n"); print("<TR align=\"left\" valign=\"middle\">\n"); print(" <TD><INPUT TYPE=button NAME=\"sine\" VALUE=\" sin \" onClick=sin()></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"arcsine\" VALUE=\"asin\" onClick=arcSin()></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"cosine\" VALUE=\"cos\" onClick=cos()></TD>\n"); print(" <TD><INPUT TYPE=button NAME=\"arccosine\" VALUE=\"acs\" onClick=arcCos()></TD>\n"); print("\n"); print("<TR align=\"left\" valign=\"middle\">\n"); print(" <TD COLSPAN=2><INPUT TYPE=button NAME=clear VALUE=\" Clear \" onClick=clearDisplay()></TD>\n"); print(" <TD COLSPAN=3><INPUT TYPE=button NAME=enter VALUE=\" = \" onClick=calculate()></TD>\n"); print("\n"); print("</TABLE>\n"); print(" <!--\n"); print(" <TD VALIGN=top> \n"); print(" <B>NOTE:</B> All sine and cosine calculations are\n"); print(" <br>done in radians. Remember to convert first\n"); print(" <br>if using degrees.\n"); print(" </TD>\n"); print(" -->\n"); print(" \n"); print("</TABLE>\n"); print("\n"); print("\n"); print("</TABLE>\n"); print("</BODY>\n"); print("</HTML>\n"); } } php?>