rfc:explicit_octal_notation

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rfc:explicit_octal_notation [2020/10/20 23:46] – crellrfc:explicit_octal_notation [2020/11/07 08:33] – Add explicit mention of upper case notation. girgias
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   * Date: 2020-10-20   * Date: 2020-10-20
   * Author: George Peter Banyard, <girgias@php.net>   * Author: George Peter Banyard, <girgias@php.net>
-  * Status: Draft+  * Status: Under Discussion
   * First Published at: https://wiki.php.net/rfc/explicit_octal_notation   * First Published at: https://wiki.php.net/rfc/explicit_octal_notation
  
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 This convention for octal integers is well established and followed by many programming languages (Java, C, C#, Golang, Haskell, and more). However, Python, JavaScript, and Rust [[https://docs.python.org/3/reference/lexical_analysis.html#integer-literals|[1]]][[https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Numbers_and_dates|[2]]][[https://doc.rust-lang.org/rust-by-example/primitives/literals.html|[3]]] only accept or support an explicit octal notation ''0o''. This convention for octal integers is well established and followed by many programming languages (Java, C, C#, Golang, Haskell, and more). However, Python, JavaScript, and Rust [[https://docs.python.org/3/reference/lexical_analysis.html#integer-literals|[1]]][[https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Numbers_and_dates|[2]]][[https://doc.rust-lang.org/rust-by-example/primitives/literals.html|[3]]] only accept or support an explicit octal notation ''0o''.
 +
 +Surprisingly PHP already has support for this notation when using the <php>octdec()</php> and <php>base_convert()</php> functions.
  
 ===== Proposal ===== ===== Proposal =====
  
-Add support for the explicit octal notation ''0o'' for integer literals analogous to ''0x'' and ''0b'' for hexadecimal and binary.+Add support for the explicit octal notation ''0o''/''0O'' for integer literals analogous to ''0x''/''0X'' and ''0b''/''0B'' for hexadecimal and binary.
  
 <code php> <code php>
 0o16 === 14; // true 0o16 === 14; // true
 0o123 === 83; // true 0o123 === 83; // true
 +
 +0O16 === 14; // true
 +0O123 === 83; // true
  
 016 === 0o16; // true 016 === 0o16; // true
 +016 === 0O16; // true
 </code> </code>
  
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 ==== To Existing Extensions ==== ==== To Existing Extensions ====
 Added support to the GMP extension. Added support to the GMP extension.
 +
 +Added support to the <php>FILTER_VALIDATE_INT</php> filter when using the <php>FILTER_FLAG_ALLOW_OCTAL</php> flag
  
 ==== To Opcache ==== ==== To Opcache ====
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 [[https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Numbers_and_dates|[2]]] JavaScript language references about numbers \\ [[https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Numbers_and_dates|[2]]] JavaScript language references about numbers \\
 [[https://doc.rust-lang.org/rust-by-example/primitives/literals.html|[3]]] Rust language reference about literals \\ [[https://doc.rust-lang.org/rust-by-example/primitives/literals.html|[3]]] Rust language reference about literals \\
-[[rfc:remove_hex_support_in_numeric_strings|4]] PHP RFC: Remove hex support in numeric strings+[[rfc:remove_hex_support_in_numeric_strings|[4]]] PHP RFC: Remove hex support in numeric strings
  
  
rfc/explicit_octal_notation.txt · Last modified: 2021/01/04 20:12 by girgias

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