PHP Calculator

PHP file for Calculator
kris1788 · Aug 4, 2022 · 6dabcfa · 6dabcfa
1 parent 46db09f
commit 6dabcfa
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diff --git a/calc.php b/calc.php
@@ -0,0 +1,167 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<?php
+if (isset($_REQUEST['cal'])) {
+$a=$_REQUEST['cal'];
+//Replacing root symbol with ~ since it has 3 charectors
+$a=str_replace('√','~',$a);
+$bb=preg_replace("/[0-9.]/",'',$a);
+$cc=preg_replace("/[^a-z0-9.]/i",'#',$a);
+$dd=explode("#",$cc);
+$b2=$a;
+//Doing all raising and root in serial order
+for ($i=0;$i<strlen($bb);$i++) {
+if (substr($bb,$i,1) == "^") {
+$b=pow($dd[$i],$dd[$i + 1]);
+$b2=str_replace($dd[$i]."^".$dd[$i + 1],$b,$b2);
+$dd[$i + 1]=$b;
+} elseif (substr($bb,$i,1) == "~") {
+$b=pow($dd[$i],1/$dd[$i + 1]);
+$b2=str_replace($dd[$i]."~".$dd[$i + 1],$b,$b2);
+$dd[$i + 1]=$b;
+} 
+}
+
+$b=$b2;
+
+$bb=preg_replace("/[0-9.]/",'',$b2);
+$cc=preg_replace("/[^a-z0-9.]/i",'#',$b2);
+$dd=explode("#",$cc);
+//Doing all Multiplication and Division in serial order
+for ($i=0;$i<strlen($bb);$i++) {
+if (substr($bb,$i,1) == "*") {
+$b=$dd[$i] * $dd[$i + 1];
+$b2=str_replace($dd[$i]."*".$dd[$i + 1],$b,$b2);
+$dd[$i + 1]=$b;
+} elseif (substr($bb,$i,1) == "/") {
+$b=$dd[$i] / $dd[$i + 1];
+$b2=str_replace($dd[$i]."/".$dd[$i + 1],$b,$b2);
+$dd[$i + 1]=$b;
+} 
+}
+$b=$b2;
+
+$bb=preg_replace("/[0-9.]/",'',$b2);
+$cc=preg_replace("/[^a-z0-9.]/i",'#',$b2);
+$dd=explode("#",$cc);
+//Doing all Addition and Substraction in serial order
+for ($i=0;$i<strlen($bb);$i++) {
+if (substr($bb,$i,1) == " ") {
+$b=$dd[$i] + $dd[$i + 1];
+$dd[$i + 1]=$b;
+} elseif (substr($bb,$i,1) == "-") {
+$b=$dd[$i] - $dd[$i + 1];
+$dd[$i + 1]=$b;
+} 
+}
+echo $b;exit;
+} else {
+?>
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+<title>KRISCALCULATOR</title>
+<link rel="stylesheet" type="text/css" href="kris.css">
+<style>
+input::-webkit-outer-spin-button,
+input::-webkit-inner-spin-button
+{
+-webkit-appearance: none;
+margin: 0;
+}
+input[type=number] {
+-moz-appearance: textfield;
+}
+</style>
+</head>
+<body>
+<form>
+<br><div style='float: center;width:700px;margin: auto;'>
+<script>
+function action1(a) {
+	document.getElementById("inpt").focus();
+	if (a=="D")	{
+    document.getElementById("display1").innerHTML="";
+	document.getElementById("display2").innerHTML="";
+	document.getElementById("inpt").value="";
+	return;
+	}
+var str1="0123456789(.)";
+var str2=document.getElementById("inpt").value;
+if (a=="C")	{
+str2=str2.substr(0,str2.length-1);
+document.getElementById("inpt").value=str2;
+return;
+}
+var cstr=document.getElementById("display1").innerHTML;
+if (str1.includes(a)) {
+document.getElementById("inpt").value=str2 + a;
+return;} else {
+	if (str2==""){
+	if (cstr.substr(cstr.length-1,1)!="=")	{
+    document.getElementById("display1").innerHTML=cstr.substr(0,cstr.length-1)+a;
+	return;
+	} else {
+		var str3=document.getElementById("display2").innerHTML;
+		if (str3!="") 		{
+		document.getElementById("display1").innerHTML=str3+a;
+		}
+		return;}
+		} else {
+		if (cstr.substr(cstr.length-1,1)=="=")	{
+		document.getElementById("display1").innerHTML=str2+a;
+		document.getElementById("display2").innerHTML=str2
+		document.getElementById("inpt").value="";
+		return;
+	} 
+		}
+		cstr=cstr+str2;
+}
+
+if (window.XMLHttpRequest) {
+            // code for IE7+, Firefox, Chrome, Opera, Safari
+            xmlhttp = new XMLHttpRequest();
+        } else {
+            // code for IE6, IE5
+            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
+         }
+        xmlhttp.onreadystatechange = function() {
+			 if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
+				 var r=xmlhttp.responseText;
+				 document.getElementById("display1").innerHTML=cstr + a;
+				 document.getElementById("display2").innerHTML=r; 
+				document.getElementById("inpt").value="";
+             }
+        }		
+        xmlhttp.open("POST","calc.php",true);
+		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
+		xmlhttp.send("cal="+cstr);
+  }
+ function myFunction (evt) {
+var kCode = (evt.which) ? evt.which : evt.keyCode
+if (kCode == 107) {action1("+");
+evt.preventDefault();
+return false;}
+else if (kCode == 109) {action1("-");
+evt.preventDefault();
+return false;}
+else if (kCode == 106) {action1("*");return false;}
+else if (kCode == 111) {action1("/");return false;}
+else if (kCode == 46) {action1("D");return false;}
+else if (kCode == 13) {action1("=");
+evt.preventDefault();
+return false;}
+else if (kCode == 61) {action1("=");return false;}
+ }
+</script>
+<?php
+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>";
+echo "<tr><td colspan=4 class='full' id='display1'></td>";
+echo "<tr><td colspan=4 class='full' id='display2'></td>";
+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>";
+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>";
+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>";
+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>";
+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>";
+}
+?>
+</form></body></html>
diff --git a/kris.css b/kris.css
@@ -0,0 +1,47 @@
+body {text-align:center;	
+  margin: 0px;
+  padding: 2px;
+  font:100% Arial,Helvetica,sans-serif;  
+  overflow:auto;}
+.tablem {
+     margin: 0 auto;
+	border:1;
+	text-align:center;
+	font-family: tahoma, verdana, arial, helvetica, sans-serif;
+    font-size: 14px;
+    border-collapse: collapse;
+	color: #C0C0C0;
+  }
+.tablem, th, td
+{
+border: 1px solid #777777;
+border-collapse: collapse;
+}
+.full {
+	text-align:right;
+    vertical-align:middle;
+	height:30px;
+	width:250px;
+	padding-right: 4px;
+	background-color: #F0F0F0;
+	color: #000000;
+	}
+.onefr {
+ vertical-align:middle;
+	height:50px;
+	width:60px;
+	background-color: #66FFFF;
+	color: #000000;
+	}
+.numbfl {
+	text-align:right;
+    vertical-align:middle;
+	height:100%;
+	width:98%;
+	border:none;	
+	background-color: #F0F0F0;
+	padding-right: 2%;
+	}
+.numbfl:focus {
+background-color: #FFA07A;
+}