使用.htm文件（包含XML）作为模板，然后重新保存保留原始格式

Question

I currently have a Snom XML file (stored as filename.htm) which I need to use as a template file to produce specific individual files.

I have attempted to load the .htm using get_file_contents and DOMDocument however I either lose the tags in the document or the formatting.

Is there a way to load contents of a file, replace template placeholders then save the new file preserving the format and original spacing?

Template File

<?xml version="1.0" encoding="utf-8" ?> 
<settings>
    <phone-settings e="2">
        <user_active idx="1" perm="R">on</user_active>
        <user_realname idx="1" perm="R">{Prefix}{Suffix}</user_realname>
        <user_pname idx="1" perm="R">{Prefix}{Suffix}</user_pname>
        <user_name idx="1" perm="R">{Prefix}{Suffix}</user_name>
        <phone_name idx="1" perm="R">{Prefix}{Suffix}</phone_name>
        <user_idle_text idx="1" perm="R">{Prefix}{Suffix}</user_idle_text>

        <idle_offhook idx="1" perm="R">on</idle_offhook>
        <offhook_dial_prompt idx="1" perm="R">off</offhook_dial_prompt>
    </phone-settings>
</settings>

Required End Result

<?xml version="1.0" encoding="utf-8" ?> 
<settings>
    <phone-settings e="2">
        <user_active idx="1" perm="R">on</user_active>
        <user_realname idx="1" perm="R">Phone 001</user_realname>
        <user_pname idx="1" perm="R">Phone 001</user_pname>
        <user_name idx="1" perm="R">Phone 001</user_name>
        <phone_name idx="1" perm="R">Phone 001</phone_name>
        <user_idle_text idx="1" perm="R">Phone 001</user_idle_text>

        <idle_offhook idx="1" perm="R">on</idle_offhook>
        <offhook_dial_prompt idx="1" perm="R">off</offhook_dial_prompt>
    </phone-settings>
</settings>

Answer 1

Assming the placeholders are unique and not used elsewhere in "non-placeholder" contexts, then a simple string operation would do the trick:

$xml = file_get_contents('template.xml');
$xml = str_replace('{Prefix}', 'Phone', $xml);
$xml = str_replace('{Suffix}', '001', $xml);
etc...

file_put_contents('parsed.xml, $xml);