diff --git a/bureau/class/config_real.php b/bureau/class/config_real.php
index 6a770acb..16d644b1 100644
--- a/bureau/class/config_real.php
+++ b/bureau/class/config_real.php
@@ -84,7 +84,7 @@ $classes=array();
 /* CLASSES PHP : automatic include : */
 $c=opendir($root."class/");
 while ($di=readdir($c)) {
-  if (ereg("^m_(.*)\\.php$",$di,$match)) { // $
+  if (preg_match("#^m_(.*)\\.php$#",$di,$match)) { // $
     $name1="m_".$match[1];
     $name2=$match[1];
     $classes[]=$name2;
diff --git a/bureau/class/functions.php b/bureau/class/functions.php
index f3ce2a7b..239978e6 100644
--- a/bureau/class/functions.php
+++ b/bureau/class/functions.php
@@ -190,7 +190,7 @@ function checkfqdn($fqdn) {
 
     // Note: a.foo.net is a valid domain
     // Note: RFC1035 tells us that a domain should not start by a digit, but every registrar allows such a domain to be created ... too bad.
-    if (!eregi("^[a-z0-9]([a-z0-9-]*[a-z0-9])?$",$val)) {
+    if (!preg_match("#^[a-z0-9]([a-z0-9-]*[a-z0-9])?$#i",$val)) {
       return 3;
     }
   }
diff --git a/bureau/class/m_admin.php b/bureau/class/m_admin.php
index 7c4f6f9c..8b4533c3 100644
--- a/bureau/class/m_admin.php
+++ b/bureau/class/m_admin.php
@@ -328,7 +328,7 @@ class m_admin {
     }
     // Vérification de la conformité du login
     $login=strtolower($login);
-    if (!ereg("^[a-z0-9]*$",$login)) { //$
+    if (!preg_match("#^[a-z0-9]*$#",$login)) { //$
       $err->raise("admin", "Login can only contains characters a-z and 0-9");
       return false;
     }
diff --git a/bureau/class/m_dom.php b/bureau/class/m_dom.php
index 2a47d71e..aa6ac616 100644
--- a/bureau/class/m_dom.php
+++ b/bureau/class/m_dom.php
@@ -453,7 +453,7 @@ class m_dom {
     $err->log("dom","whois",$domain);
     // pour ajouter un nouveau TLD, utiliser le code ci-dessous.
     //  echo "whois : $domain<br />";
-    ereg(".*\.([^\.]*)",$domain,$out);
+    preg_match("#.*\.([^\.]*)#",$domain,$out);
     $ext=$out[1];
     // pour ajouter un nouveau TLD, utiliser le code ci-dessous.
     //  echo "ext: $ext<br />";
@@ -464,7 +464,7 @@ class m_dom {
       $state=0;
       while (!feof($fp)) {
         $ligne = fgets($fp,128);
-        if (ereg('^whois:[[:space:]]+.*$', $ligne)) { $serveur=preg_replace('/whois:\ */','',$ligne,1); }
+        if (preg_match('#^whois:#', $ligne)) { $serveur=preg_replace('/whois:\ */','',$ligne,1); }
       }
     }
 
@@ -495,15 +495,15 @@ class m_dom {
   case "biz":
   case "name":
   case "cc":
-    if (ereg("Name Server:", $ligne)) {
+    if (preg_match("#Name Server:#", $ligne)) {
       $found = true;
-      $tmp=strtolower(ereg_replace(chr(10), "",ereg_replace(chr(13),"",ereg_replace(" ","", ereg_replace("Name Server:","", $ligne)))));
+      $tmp=strtolower(str_replace(chr(10), "",str_replace(chr(13),"",str_replace(" ","", str_replace("Name Server:","", $ligne)))));
       if ($tmp)
         $server[]=$tmp;
     }
     break;
   case "cx":
-    $ligne = ereg_replace(chr(10), "",ereg_replace(chr(13),"",ereg_replace(" ","", $ligne)));
+    $ligne = str_replace(chr(10), "",str_replace(chr(13),"",str_replace(" ","", $ligne)));
     if ($ligne=="" && $state==1)
       $state=2;
     if ($state==1)
@@ -536,7 +536,7 @@ class m_dom {
           }
           break;
     case "it":
-          if (ereg("nserver:", $ligne)) {
+          if (preg_match("#nserver:#", $ligne)) {
             $found=true;
             $tmp=strtolower(preg_replace("/nserver:\s*[^ ]*\s*([^\s]*)$/","\\1", $ligne));
             if ($tmp)
@@ -545,20 +545,20 @@ class m_dom {
           break;
   case "fr":
   case "re":
-          if (ereg("nserver:", $ligne)) {
+          if (preg_match("#nserver:#", $ligne)) {
             $found=true;
-            $tmp=strtolower(preg_replace("/nserver:\s*([^\s]*)\s*.*$/","\\1", $ligne));
+            $tmp=strtolower(preg_replace("#nserver:\s*([^\s]*)\s*.*$#","\\1", $ligne));
             if ($tmp)
               $server[]=$tmp;
           }
           break;
   case "ca":
   case "ws";
-    if (ereg('^[[:space:]]*Name servers:[[:space:]]*$', $ligne)) {
+    if (preg_match('#Name servers#', $ligne)) {
           // found the server
       $state = 1;
     } elseif ($state) {
-      if (ereg('^[^%]', $ligne) && $ligne = ereg_replace('[[:space:]]', "", $ligne)) {
+      if (preg_match('#^[^%]#', $ligne) && $ligne = preg_replace('#[[:space:]]#', "", $ligne)) {
       // first non-whitespace line is considered to be the nameservers themselves
       $found = true;
       $server[] = $ligne;
@@ -566,7 +566,7 @@ class m_dom {
     }
     break;
         case "coop":
-          if (preg_match('/Host Name:\s*([^\s]+)/', $ligne, $matches)) {
+          if (preg_match('#Host Name:\s*([^\s]+)#', $ligne, $matches)) {
             $found = true;
             $server[] = $matches[1];
           }
diff --git a/bureau/class/m_mem.php b/bureau/class/m_mem.php
index 946dda73..81e10509 100644
--- a/bureau/class/m_mem.php
+++ b/bureau/class/m_mem.php
@@ -492,8 +492,8 @@ Cordialement.
     if ($this->user["show_help"] || $force) {
       $hlp=_("hlp_$file");
       if ($hlp!="hlp_$file") {
-	      $hlp=ereg_replace(
-			  "HELPID_([0-9]*)",
+	      $hlp=preg_replace(
+			  "#HELPID_([0-9]*)#",
 			  "<a href=\"javascript:help(\\1);\"><img src=\"/admin/aide/help.png\" width=\"17\" height=\"17\" style=\"vertical-align: middle;\" alt=\""._("Help")."\" /></a>",$hlp);
       	echo "<p class=\"hlp\">".$hlp."</p>";
        	return true;
diff --git a/bureau/class/m_mysql.php b/bureau/class/m_mysql.php
index f900ddd4..8f742287 100644
--- a/bureau/class/m_mysql.php
+++ b/bureau/class/m_mysql.php
@@ -135,7 +135,7 @@ class m_mysql {
       $err->raise("mysql",1);
       return false;
     }
-    if (!ereg("^[0-9a-z]*$",$dbn)) {
+    if (!preg_match("#^[0-9a-z]*$#",$dbn)) {
       $err->raise("mysql",2);
       return false;
     }
@@ -218,7 +218,7 @@ class m_mysql {
   function put_mysql_backup($dbn,$bck_mode,$bck_history,$bck_gzip,$bck_dir) {
     global $db,$err,$mem,$bro,$cuid;
     $err->log("mysql","put_mysql_backup");
-    if (!ereg("^[0-9a-z]*$",$dbn)) {
+    if (!preg_match("#^[0-9a-z]*$#",$dbn)) {
       $err->raise("mysql",2);
       return false;
     }
@@ -443,7 +443,7 @@ class m_mysql {
       $err->raise("mysql",13);
       return false;
     }
-    if (!ereg("^[0-9a-z]",$usern)) {
+    if (!preg_match("#^[0-9a-z]#",$usern)) {
       $err->raise("mysql",14);
       return false;
     }
@@ -519,7 +519,7 @@ class m_mysql {
   function del_user($user) {
     global $db,$err,$mem,$cuid,$L_MYSQL_DATABASE;
     $err->log("mysql","del_user",$user);
-    if (!ereg("^[0-9a-z]",$user)) {
+    if (!preg_match("#^[0-9a-z]#",$user)) {
       $err->raise("mysql",14);
       return false;
     }