Unknown characters at the end of base64_decode result in PHP












0















I'm using PHP IMAP functions to read emails from a remote server. While somebody sends an email through Gmail, the body shows ASCII encoding and as the message is in UTF-8, I had to use base64_decode() to convert it to acceptable result.

The remained problem is showing uknown characters at the end of returned string. It's something like this:




این یک تست هست. ▯




I used different solutions to remove these characters but I was not able to do it. Do you have any practical solution?



Note: I used a variety of encoding conversion functions (like iconv , utf8_encode, etc.) to achieve the UTF-8 equivalent but none of them could not help me to convert ASCII to UTF-8.










share|improve this question























  • the result you show is utf-8 encoding, ends up with '▯', just filter ▯ character with regex, no? or best use whitelist for allowed characters.

    – Leo Tahk
    Nov 18 '18 at 11:59













  • something like: stackoverflow.com/questions/53051684/…

    – Leo Tahk
    Nov 18 '18 at 12:03











  • I can not be sure what extra character might append to the final string. So your solution is not suitable in my mind

    – Mohammad Saberi
    Nov 19 '18 at 7:04











  • thats why you make a whitelist of allowed characters

    – Leo Tahk
    Nov 19 '18 at 8:26
















0















I'm using PHP IMAP functions to read emails from a remote server. While somebody sends an email through Gmail, the body shows ASCII encoding and as the message is in UTF-8, I had to use base64_decode() to convert it to acceptable result.

The remained problem is showing uknown characters at the end of returned string. It's something like this:




این یک تست هست. ▯




I used different solutions to remove these characters but I was not able to do it. Do you have any practical solution?



Note: I used a variety of encoding conversion functions (like iconv , utf8_encode, etc.) to achieve the UTF-8 equivalent but none of them could not help me to convert ASCII to UTF-8.










share|improve this question























  • the result you show is utf-8 encoding, ends up with '▯', just filter ▯ character with regex, no? or best use whitelist for allowed characters.

    – Leo Tahk
    Nov 18 '18 at 11:59













  • something like: stackoverflow.com/questions/53051684/…

    – Leo Tahk
    Nov 18 '18 at 12:03











  • I can not be sure what extra character might append to the final string. So your solution is not suitable in my mind

    – Mohammad Saberi
    Nov 19 '18 at 7:04











  • thats why you make a whitelist of allowed characters

    – Leo Tahk
    Nov 19 '18 at 8:26














0












0








0








I'm using PHP IMAP functions to read emails from a remote server. While somebody sends an email through Gmail, the body shows ASCII encoding and as the message is in UTF-8, I had to use base64_decode() to convert it to acceptable result.

The remained problem is showing uknown characters at the end of returned string. It's something like this:




این یک تست هست. ▯




I used different solutions to remove these characters but I was not able to do it. Do you have any practical solution?



Note: I used a variety of encoding conversion functions (like iconv , utf8_encode, etc.) to achieve the UTF-8 equivalent but none of them could not help me to convert ASCII to UTF-8.










share|improve this question














I'm using PHP IMAP functions to read emails from a remote server. While somebody sends an email through Gmail, the body shows ASCII encoding and as the message is in UTF-8, I had to use base64_decode() to convert it to acceptable result.

The remained problem is showing uknown characters at the end of returned string. It's something like this:




این یک تست هست. ▯




I used different solutions to remove these characters but I was not able to do it. Do you have any practical solution?



Note: I used a variety of encoding conversion functions (like iconv , utf8_encode, etc.) to achieve the UTF-8 equivalent but none of them could not help me to convert ASCII to UTF-8.







php utf-8 ascii






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share|improve this question











share|improve this question




share|improve this question










asked Nov 18 '18 at 6:58









Mohammad SaberiMohammad Saberi

5,698205299




5,698205299













  • the result you show is utf-8 encoding, ends up with '▯', just filter ▯ character with regex, no? or best use whitelist for allowed characters.

    – Leo Tahk
    Nov 18 '18 at 11:59













  • something like: stackoverflow.com/questions/53051684/…

    – Leo Tahk
    Nov 18 '18 at 12:03











  • I can not be sure what extra character might append to the final string. So your solution is not suitable in my mind

    – Mohammad Saberi
    Nov 19 '18 at 7:04











  • thats why you make a whitelist of allowed characters

    – Leo Tahk
    Nov 19 '18 at 8:26



















  • the result you show is utf-8 encoding, ends up with '▯', just filter ▯ character with regex, no? or best use whitelist for allowed characters.

    – Leo Tahk
    Nov 18 '18 at 11:59













  • something like: stackoverflow.com/questions/53051684/…

    – Leo Tahk
    Nov 18 '18 at 12:03











  • I can not be sure what extra character might append to the final string. So your solution is not suitable in my mind

    – Mohammad Saberi
    Nov 19 '18 at 7:04











  • thats why you make a whitelist of allowed characters

    – Leo Tahk
    Nov 19 '18 at 8:26

















the result you show is utf-8 encoding, ends up with '▯', just filter ▯ character with regex, no? or best use whitelist for allowed characters.

– Leo Tahk
Nov 18 '18 at 11:59







the result you show is utf-8 encoding, ends up with '▯', just filter ▯ character with regex, no? or best use whitelist for allowed characters.

– Leo Tahk
Nov 18 '18 at 11:59















something like: stackoverflow.com/questions/53051684/…

– Leo Tahk
Nov 18 '18 at 12:03





something like: stackoverflow.com/questions/53051684/…

– Leo Tahk
Nov 18 '18 at 12:03













I can not be sure what extra character might append to the final string. So your solution is not suitable in my mind

– Mohammad Saberi
Nov 19 '18 at 7:04





I can not be sure what extra character might append to the final string. So your solution is not suitable in my mind

– Mohammad Saberi
Nov 19 '18 at 7:04













thats why you make a whitelist of allowed characters

– Leo Tahk
Nov 19 '18 at 8:26





thats why you make a whitelist of allowed characters

– Leo Tahk
Nov 19 '18 at 8:26












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