Fix oci extension support on Windows for PHP 8.4 and above

src/scripts/extensions/add_extensions.ps1

@@ -136,6 +136,10 @@ Function Add-Extension {
         {
           $params["Version"] = $extension_version
         }
+        # If extension for a different version exists
+        if(Test-Path $ext_dir\php_$extension.dll) {
+          Move-Item $ext_dir\php_$extension.dll $ext_dir\php_$extension.bak.dll -Force
+        }
         Install-PhpExtension @params
         Set-ExtensionPrerequisites $extension
       }

src/scripts/extensions/oci.ps1

@@ -48,6 +48,7 @@ Function Get-Oci8DLL() {
       return $_
     }
   }
+  return $null
 }
 
 # Function to install oci8 and pdo_oci.
@@ -63,18 +64,21 @@ Function Add-Oci() {
     $status = 'Enabled'
     Add-InstantClient
     if ($extension -eq "pdo_oci") {
-      Enable-PhpExtension pdo_oci -Path $php_dir
+      if($version -lt '8.4') {
+        Enable-PhpExtension pdo_oci -Path $php_dir
+      } else {
+        $status = 'Installed and enabled'
+        Add-Extension pdo_oci >$null 2>&1
+      }
     } else {
-      if(-not(Test-Path $ext_dir\php_oci8.dll)) {
+      $oci8DLL = Get-Oci8DLL
+      if($null -eq $oci8DLL) {
+        $status = 'Installed and enabled'
+        Get-File -Url (Get-Oci8Url) -OutFile $php_dir\oci8.zip
+        Expand-Archive -Path $php_dir\oci8.zip -DestinationPath $ext_dir -Force
         $oci8DLL = Get-Oci8DLL
-        if($oci8DLL) {
-          Copy-Item -Path $oci8DLL -Destination $ext_dir\php_oci8.dll
-        } else {
-          $status = 'Installed and enabled'
-          Get-File -Url (Get-Oci8Url) -OutFile $php_dir\oci8.zip
-          Expand-Archive -Path $php_dir\oci8.zip -DestinationPath $ext_dir -Force
-        }
       }
+      Copy-Item -Path "$ext_dir\$($oci8DLL.Name)" -Destination $ext_dir\php_oci8.dll -Force
       Add-Content -Value "`r`nextension=php_oci8.dll" -Path $php_dir\php.ini
     }
     Add-Log $tick $extension $status