I need to change xml attributes using PHP (i.e. Name, Phone1, Phone2). The changed attribute values need to save to the file where the code was taken from. Could anyone set me on the right track?
<PhoneBook>
<Title>TRSA</Title>
<Menu Name="Informational">
<Unit Name="Name Surname" Phone1="476" Phone2="8 888 88 888"
Phone3="62811" default_photo="Resource:"/>
<Unit Name="John Johnson" Phone1="412" Phone2="" Phone3="62812"
default_photo="Resource:"/>
<Unit Name="Carl Johnson" Phone1="481" Phone2="8 888 88 888"
Phone3="22222" default_photo="Resource:"/>
<Unit Name="Carl Johnson" Phone1="481" Phone2="" Phone3="22222"
default_photo="Resource:"/>
<Unit Name="Carl Johnson" Phone1="427" Phone2="" Phone3="22222"
default_photo="Resource:"/>
<Unit Name="Carl Johnson" Phone1="414" Phone2="" Phone3="22222"
default_photo="Resource:"/>
<Unit Name="Carl Johnson" Phone1="414" Phone2="8 888 88 888"
Phone3="22222" default_photo="Resource:"/>
<Unit Name="Carl Johnson" Phone1="410" Phone2="8 888 88 888"
Phone3="22222" default_photo="Resource:"/>
</Menu>
<Menu Name="Administration">
<Unit Name="Carl Johnson" Phone1="413" Phone2="8 888 88 888"
Phone3="22222" default_photo="Resource:"/>
<Unit Name="Carl Johnson" Phone1="450" Phone2="8 888 88 888"
Phone3="22222" default_photo="Resource:"/>
<Unit Name="Carl Johnson" Phone1="344" Phone2="8 888 88 888"
Phone3="22222" default_photo="Resource:"/>
<Unit Name="Carl Johnson" Phone1="484" Phone2="" Phone3="52110"
default_photo="Resource:"/>
<Unit Name="Carl Johnson" Phone1="465" Phone2="8 888 88 888"
Phone3="22222" default_photo="Resource:"/>
<Unit Name="Carl Johnson " Phone1="522" Phone2="8 888 88 888"
Phone3="22222" default_photo="Resource:"/>
</Menu>
</PhoneBook>