diff --git a/romanToNumber/convertisseurYvette.php b/romanToNumber/convertisseurYvette.php
new file mode 100644
index 0000000..6bde77a
--- /dev/null
+++ b/romanToNumber/convertisseurYvette.php
@@ -0,0 +1,84 @@
+<?php
+
+//convertir un nombre romain en nombre arabe
+
+
+function base($char)
+{
+    if($char === 'I')  return 1;
+   
+    elseif($char === 'V') return 5;
+
+    elseif($char === 'X') return 10;
+    elseif($char === 'L') return 50;
+    elseif($char === 'C') return 100;
+    elseif($char === 'D') return 500;
+    elseif($char === 'M') return 1000;
+}
+
+function Convertir($nbreRomain)
+{
+    $resultat =array();
+    $somme=0;
+    $reference;
+ 
+    if(strlen($nbreRomain)===1)
+    {
+
+        $somme=base($nbreRomain);
+       return $somme;
+    }
+    elseif(strlen($nbreRomain)>1)
+    {
+        for($j=0; $j<strlen($nbreRomain); $j++ )
+        {
+            
+            $resultat[]=base($nbreRomain[$j]);
+         
+        }
+   
+        $i=0;
+       while(sizeof($resultat)!=0)
+        {
+            if(isset($resultat[$i+1])){
+                if($resultat[$i] === $resultat[$i+1]) 
+                {
+                    $somme+=$resultat[$i]+$resultat[$i+1];
+                    array_splice($resultat,0,2);
+                 
+                }
+       
+                elseif($resultat[$i] < $resultat[$i + 1]) 
+                {
+                   $somme+=$resultat[$i+1] - $resultat[$i];
+                  array_splice($resultat,0,2);
+                  
+                }
+       
+                elseif($resultat[$i] > $resultat[$i+1]) 
+                {
+                   $somme+= $resultat[$i];
+                   array_splice($resultat,0,1);
+                  
+                }
+            }
+            else{
+                $somme+=$resultat[$i];
+                $resultat=array();
+            }
+           
+        }
+        
+
+      return $somme;
+    }
+
+      
+      
+
+
+
+}
+
+
+?>
\ No newline at end of file
diff --git a/romanToNumber/interfaceYvette.php b/romanToNumber/interfaceYvette.php
new file mode 100644
index 0000000..234e826
--- /dev/null
+++ b/romanToNumber/interfaceYvette.php
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html lang="fr">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta http-equiv="X-UA-Compatible" content="ie=edge">
+    <title>Convertisseur Nombre Romain en Nombre Arabe</title>
+    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
+    <script type='text/javascript' >
+        document.queryse
+    </script>
+
+</head>
+<body>
+    
+<?php
+
+require_once("convertisseurYvette.php");
+
+?>
+<div class="card mx-auto mt-5 bg-warning" style="width: 40rem;">
+  
+  <div class="card-body">
+     <form class="container " action="" method="post">
+            <div class="form-group row">
+                <label for="Romain" class="col-6 text-right">Nombre Romain</label>
+                <input type="text" class="form-control col-6" id="Romain" placeholder="Entre un nombre romain" name=romain value="<?php if($_POST) echo $_POST['romain'];?>">
+            
+            </div>
+            <div class="form-group row">
+                <label for="Arabe" class="col-6 text-right">Nombre Arabe</label>
+                <input type="text" class="form-control col-6" id="Arabe" value="<?php if($_POST) echo Convertir($_POST['romain']);?>">
+            </div>
+            
+            <button type="submit" class="btn btn-danger" >Convertir</button>
+        </form>
+  </div>
+</div>
+   
+
+
+</body>
+</html>
\ No newline at end of file
