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kris1788kris1788
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PHP Calculator
PHP file for Calculator
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‎calc.php‎

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<?php
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if (isset($_REQUEST['cal'])) {
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$a=$_REQUEST['cal'];
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//Replacing root symbol with ~ since it has 3 charectors
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$a=str_replace('√','~',$a);
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$bb=preg_replace("/[0-9.]/",'',$a);
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$cc=preg_replace("/[^a-z0-9.]/i",'#',$a);
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$dd=explode("#",$cc);
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$b2=$a;
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//Doing all raising and root in serial order
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for ($i=0;$i<strlen($bb);$i++) {
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if (substr($bb,$i,1) == "^") {
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$b=pow($dd[$i],$dd[$i + 1]);
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$b2=str_replace($dd[$i]."^".$dd[$i + 1],$b,$b2);
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$dd[$i + 1]=$b;
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} elseif (substr($bb,$i,1) == "~") {
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$b=pow($dd[$i],1/$dd[$i + 1]);
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$b2=str_replace($dd[$i]."~".$dd[$i + 1],$b,$b2);
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$dd[$i + 1]=$b;
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}
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}
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$b=$b2;
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$bb=preg_replace("/[0-9.]/",'',$b2);
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$cc=preg_replace("/[^a-z0-9.]/i",'#',$b2);
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$dd=explode("#",$cc);
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//Doing all Multiplication and Division in serial order
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for ($i=0;$i<strlen($bb);$i++) {
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if (substr($bb,$i,1) == "*") {
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$b=$dd[$i] * $dd[$i + 1];
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$b2=str_replace($dd[$i]."*".$dd[$i + 1],$b,$b2);
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$dd[$i + 1]=$b;
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} elseif (substr($bb,$i,1) == "/") {
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$b=$dd[$i] / $dd[$i + 1];
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$b2=str_replace($dd[$i]."/".$dd[$i + 1],$b,$b2);
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$dd[$i + 1]=$b;
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}
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}
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$b=$b2;
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$bb=preg_replace("/[0-9.]/",'',$b2);
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$cc=preg_replace("/[^a-z0-9.]/i",'#',$b2);
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$dd=explode("#",$cc);
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//Doing all Addition and Substraction in serial order
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for ($i=0;$i<strlen($bb);$i++) {
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if (substr($bb,$i,1) == " ") {
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$b=$dd[$i] + $dd[$i + 1];
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$dd[$i + 1]=$b;
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} elseif (substr($bb,$i,1) == "-") {
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$b=$dd[$i] - $dd[$i + 1];
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$dd[$i + 1]=$b;
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}
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}
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echo $b;exit;
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} else {
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?>
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<title>KRISCALCULATOR</title>
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<link rel="stylesheet" type="text/css" href="kris.css">
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<style>
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input::-webkit-outer-spin-button,
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input::-webkit-inner-spin-button
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{
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-webkit-appearance: none;
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margin: 0;
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}
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input[type=number] {
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-moz-appearance: textfield;
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}
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</style>
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</head>
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<body>
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<form>
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<br><div style='float: center;width:700px;margin: auto;'>
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<script>
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function action1(a) {
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document.getElementById("inpt").focus();
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if (a=="D") {
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document.getElementById("display1").innerHTML="";
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document.getElementById("display2").innerHTML="";
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document.getElementById("inpt").value="";
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return;
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}
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var str1="0123456789(.)";
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var str2=document.getElementById("inpt").value;
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if (a=="C") {
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str2=str2.substr(0,str2.length-1);
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document.getElementById("inpt").value=str2;
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return;
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}
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var cstr=document.getElementById("display1").innerHTML;
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if (str1.includes(a)) {
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document.getElementById("inpt").value=str2 + a;
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return;} else {
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if (str2==""){
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if (cstr.substr(cstr.length-1,1)!="=") {
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document.getElementById("display1").innerHTML=cstr.substr(0,cstr.length-1)+a;
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return;
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} else {
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var str3=document.getElementById("display2").innerHTML;
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if (str3!="") {
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document.getElementById("display1").innerHTML=str3+a;
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}
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return;}
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} else {
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if (cstr.substr(cstr.length-1,1)=="=") {
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document.getElementById("display1").innerHTML=str2+a;
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document.getElementById("display2").innerHTML=str2
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document.getElementById("inpt").value="";
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return;
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}
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}
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cstr=cstr+str2;
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}
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if (window.XMLHttpRequest) {
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// code for IE7+, Firefox, Chrome, Opera, Safari
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xmlhttp = new XMLHttpRequest();
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} else {
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// code for IE6, IE5
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xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
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}
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xmlhttp.onreadystatechange = function() {
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if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
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var r=xmlhttp.responseText;
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document.getElementById("display1").innerHTML=cstr + a;
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document.getElementById("display2").innerHTML=r;
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document.getElementById("inpt").value="";
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}
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}
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xmlhttp.open("POST","calc.php",true);
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xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
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xmlhttp.send("cal="+cstr);
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}
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function myFunction (evt) {
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var kCode = (evt.which) ? evt.which : evt.keyCode
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if (kCode == 107) {action1("+");
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evt.preventDefault();
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return false;}
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else if (kCode == 109) {action1("-");
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evt.preventDefault();
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return false;}
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else if (kCode == 106) {action1("*");return false;}
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else if (kCode == 111) {action1("/");return false;}
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else if (kCode == 46) {action1("D");return false;}
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else if (kCode == 13) {action1("=");
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evt.preventDefault();
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return false;}
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else if (kCode == 61) {action1("=");return false;}
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}
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</script>
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<?php
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echo "<table class='tablem'><tr><td colspan=4 class='full'><input type='number' onkeydown='myFunction(event)' id='inpt' value='' class='numbfl' autocomplete='off' autofocus /></td>";
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echo "<tr><td colspan=4 class='full' id='display1'></td>";
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echo "<tr><td colspan=4 class='full' id='display2'></td>";
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echo "<tr><td class='onefr' onclick=action1('D');>DEL</td><td class='onefr' onclick=action1('√');>√</td><td class='onefr' onclick=action1('^');>^</td><td class='onefr' onclick=action1('=');>=</td>";
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echo "<tr><td class='onefr' onclick=action1('1');>1</td><td class='onefr' onclick=action1('2');>2</td><td class='onefr' onclick=action1('3');>3</td><td class='onefr' onclick=action1('+');>+</td>";
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echo "<tr><td class='onefr' onclick=action1('4');>4</td><td class='onefr' onclick=action1('5');>5</td><td class='onefr' onclick=action1('6');>6</td><td class='onefr' onclick=action1('-');>-</td>";
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echo "<tr><td class='onefr' onclick=action1('7');>7</td><td class='onefr' onclick=action1('8');>8</td><td class='onefr' onclick=action1('9');>9</td><td class='onefr' onclick=action1('*');>*</td>";
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echo "<tr><td class='onefr' onclick=action1('.');>.</td><td class='onefr' onclick=action1('0');>0</td><td class='onefr' onclick=action1('C');>C</td><td class='onefr' onclick=action1('/');>/</td>";
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}
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?>
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</form></body></html>

‎kris.css‎

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body {text-align:center;
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margin: 0px;
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padding: 2px;
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font:100% Arial,Helvetica,sans-serif;
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overflow:auto;}
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.tablem {
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margin: 0 auto;
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border:1;
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text-align:center;
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font-family: tahoma, verdana, arial, helvetica, sans-serif;
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font-size: 14px;
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border-collapse: collapse;
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color: #C0C0C0;
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}
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.tablem, th, td
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{
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border: 1px solid #777777;
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border-collapse: collapse;
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}
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.full {
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text-align:right;
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vertical-align:middle;
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height:30px;
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width:250px;
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padding-right: 4px;
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background-color: #F0F0F0;
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color: #000000;
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}
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.onefr {
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vertical-align:middle;
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height:50px;
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width:60px;
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background-color: #66FFFF;
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color: #000000;
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}
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.numbfl {
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text-align:right;
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vertical-align:middle;
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height:100%;
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width:98%;
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border:none;
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background-color: #F0F0F0;
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padding-right: 2%;
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}
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.numbfl:focus {
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background-color: #FFA07A;
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}

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