PHP DOMDocument->load() encoding error

This error may be caused by a character encoding system that is not fully supported on your GSM carrier network MMS handling system. To remedy the problem, under settings for the messaging service in concern, set the default character encoding scheme to GSM Alphabet instead of UTF-8, and ensure that the selected MMS class and size is supported by your carrier.Also, ensure that your device is fully compliant with the OMA( Open Mobile Alliance) MMS Messaging Standards in respect to the size and content of the message you are sending.

Try changing the encoding to UTF-8.
In Firefox, it's View->Character Encoding->Unicode(UTF-8)

try changing the page encoding, it should be Unicode (UTF-8)
in Mozilla Firefox, it's located in View->Character Encoding

hello my friend, the error refers to the writing of xls to xml of the file. So therefore the error committed within the software side particularly in the excel software. Try to convert another xls file to xml files then if you find same problem i advice you to used full version of office rather than using light version. Then reinstall the office particularly the excel software

look in the menu and try to change the encoding, There should be 3 options, Unicode, Cyrilic & Greek. Select greek if the .sub or .srt file is in ANSI encoding, or select Unicode if the file is in UTF-8 or Unicode encoding.

To find out the encoding of an .srt file the simpliest thing to do is open them with notepad and got to "File" -> "Save as", The encoding should appear in the bottom of the dialog.