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The current revision of the PHP manual mentions that the rationale behind magic quotes was to "help [prevent] code written by beginners from being dangerous." [ 2 ] It was however originally introduced in PHP 2 as a php.h compile-time setting for msql, only escaping single quotes, "making it easier to pass form data directly to msql queries". [ 3 ]
ISO-8859-7 is the IANA preferred charset name for this standard (formally the 1987 version, but in practice there is no problem using it for the current version, as the changes are pure additions to previously unassigned codes) when supplemented with the C0 and C1 control codes from ISO/IEC 6429.
Character encoding detection, charset detection, or code page detection is the process of heuristically guessing the character encoding of a series of bytes that represent text. The technique is recognised to be unreliable [ 1 ] and is only used when specific metadata , such as a HTTP Content-Type: header is either not available, or is assumed ...
ISO-8859-2 is the IANA preferred charset name for this standard when supplemented with the C0 and C1 control codes from ISO/IEC 6429. Less than 0.04% of all web pages use ISO-8859-2 as of October 2022. [3] [4] Microsoft has assigned code page 28592 a.k.a. Windows-28592 to ISO-8859-2 in Windows.
For codes from 0 to 127, the original 7-bit ASCII standard set, most of these characters can be used without a character reference. Codes from 160 to 255 can all be created using character entity names. Only a few higher-numbered codes can be created using entity names, but all can be created by decimal number character reference.
ISO-8859-9 is the IANA preferred charset name for this standard when supplemented with the C0 and C1 control codes from ISO/IEC 6429. In modern applications Unicode and UTF-8 are preferred; authors of new web pages and the designers of new protocols are instructed to use UTF-8 instead. [3]
Technically, LMBCS is a lead-byte encoding where code point 00 hex as well as code points 20 hex (32) to 7F hex (127) are identical to ASCII [1] (as well as to LICS). [5]Code point 00 hex is always treated as NUL character to ensure maximum code compatibility with existing software libraries dealing with null-terminated strings [1] in many programming languages such as C.
As a result, IBM created Code page 1124. ISO-8859-5 is the IANA preferred charset name for this standard when supplemented with the C0 and C1 control codes from ISO/IEC 6429. The Windows code page for ISO-8859-5 is code page 28595 a.k.a. Windows-28595. [3] IBM assigned code page 915 to ISO-8859-5 until that code page was extended.