Cut and paste the following script into a Script Editor document. (You can find Script Editor in the ApplieScript folder of your Applications folder.)
Open a finder window containing your files, and click the Run button in Script Editor. You'll be ask if you want to change file or folder names or both (I suggest you choose file only) and then to enter the strings you want to change. enter .html and click OK, then enter .php and click OK. That should do what you want.
<pre style="
font-family: Monaco, 'Courier New', Courier, monospace;
font-size: 10px;
margin: 0px;
padding: 5px;
border: 1px solid #000000;
width: 720px; height: 340px;
color: #000000;
background-color: #FFDDFF;
overflow: auto;"
title="this text can be pasted into the Script Editor">
(*
Replace Text In Item Names
This script is designed to replace text in the names of specific files and/or folders in the front window of the desktop.
If no folder windows are open, the script will affect files and/or folders on the desktop.
Copyright © 2001–2007 Apple Inc.
You may incorporate this Apple sample code into your program(s) without
restriction. This Apple sample code has been provided "AS IS" and the
responsibility for its operation is yours. You are not permitted to
redistribute this Apple sample code as "Apple sample code" after having
made changes. If you're going to redistribute the code, we require
that you make it clear that the code was descended from Apple sample
code, but that you've made changes.
*)
--set the source_folder to choose folder with prompt "Folder containing items to edit:"
-- get the path to the folder of the front window
-- if no windows are open, the desktop folder will be used
try
tell application "Finder" to set the source_folder to (folder of the front window) as alias
on error -- no open folder windows
set the source_folder to path to desktop folder as alias
end try
display dialog "Search and replace in:" buttons {"File Names", "Folder Names", "Both"} default button 3
set the search_parameter to the button returned of the result
repeat
display dialog "Enter text to find in the item names:" default answer "" buttons {"Cancel", "OK"} default button 2
set the search_string to the text returned of the result
if the search_string is not "" then exit repeat
end repeat
repeat
display dialog "Enter replacement text:" default answer "" buttons {"Cancel", "OK"} default button 2
set the replacement_string to the text returned of the result
if the replacement_string contains ":" then
beep
display dialog "A file or folder name cannot contain a colon (:)." buttons {"Cancel", "OK"} default button 2
else if the replacement_string contains "/" then
beep
display dialog "A file or folder name cannot contain a forward slash (/)." buttons {"Cancel", "OK"} default button 2
else
exit repeat
end if
end repeat
display dialog "Replace “" & the search_string & "” with “" & the replacement_string & "” in every item name?" buttons {"Cancel", "OK"} default button 2
set the item_list to list folder source_folder without invisibles
set source_folder to source_folder as string
repeat with i from 1 to number of items in the item_list
set this_item to item i of the item_list
set this_item to (source_folder & this_item) as alias
set this_info to info for this_item
set the current_name to the name of this_info
set change_flag to false
if the current_name contains the search_string then
if the search_parameter is "Folder Names" and ¬
folder of this_info is true then
set the change_flag to true
else if the search_parameter is "File Names" and ¬
folder of this_info is false then
set the change_flag to true
else if the search_parameter is "Both" then
set the change_flag to true
end if
if the change_flag is true then
-- replace target string using delimiters
set AppleScript's text item delimiters to the search_string
set the text_item_list to every text item of the current_name
set AppleScript's text item delimiters to the replacement_string
set the new_item_name to the text_item_list as string
set AppleScript's text item delimiters to ""
my set_item_name(this_item, new_item_name)
end if
end if
end repeat
beep 2
on set_item_name(this_item, new_item_name)
tell application "Finder"
--activate
set the parent_container_path to (the container of this_item) as text
if not (exists item (the parent_container_path & new_item_name)) then
try
set the name of this_item to new_item_name
on error the error_message number the error_number
if the error_number is -59 then
set the error_message to "This name contains improper characters, such as a colon (:)."
else --the suggested name is too long
set the error_message to error_message -- "The name is more than 31 characters long."
end if
--beep
tell me to display dialog the error_message default answer new_item_name buttons {"Cancel", "Skip", "OK"} default button 3
copy the result as list to {new_item_name, button_pressed}
if the button_pressed is "Skip" then return 0
my set_item_name(this_item, new_item_name)
end try
else --the name already exists
--beep
tell me to display dialog "This name is already taken, please rename." default answer new_item_name buttons {"Cancel", "Skip", "OK"} default button 3
copy the result as list to {new_item_name, button_pressed}
if the button_pressed is "Skip" then return 0
my set_item_name(this_item, new_item_name)
end if
end tell
end set_item_name</pre>
