UPGRADING

PHP 7.3 UPGRADE NOTES

1. Backward Incompatible Changes
2. New Features
3. Changes in SAPI modules
4. Deprecated Functionality
5. Changed Functions
6. New Functions
7. New Classes and Interfaces
8. Removed Extensions and SAPIs
9. Other Changes to Extensions
10. New Global Constants
11. Changes to INI File Handling
12. Windows Support
13. Other Changes


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1. Backward Incompatible Changes
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Core:
  . The ext_skel utility has been completely redesigned with new options and 
    some old options removed. This is now written in PHP and has no external 
	dependencies.
  . Support for BeOS has been dropped.

BCMath:
  . All warnings thrown by BCMath functions are now using PHP's error handling.
	  Formerly some warnings have directly been written to stderr.
  . bcmul() and bcpow() now return numbers with the requested scale. Formerly,
    the returned numbers may have omitted trailing decimal zeroes.

Standard:
  . getimagesize() and related functions now report the mime type of BMP images
	  as image/bmp instead of image/x-ms-bmp, since the former has been registered
		with the IANA (see RFC 7903).

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2. New Features
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BCMath:
  . bcscale() can now also be used as getter to retrieve the current scale in use.

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3. Changes in SAPI modules
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4. Deprecated Functionality
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5. Changed Functions
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6. New Functions
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Date:
  . Added the DateTime::createFromImmutable() method, which mirrors
    DateTimeImmutable::createFromMutable().

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7. New Classes and Interfaces
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8. Removed Extensions and SAPIs
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9. Other Changes to Extensions
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 FTP:
  . Set default transfer mode to binary

 ODBC: 
  . Support for ODBCRouter has been removed.
  . Support for Birdstep has been removed.

 ZIP:
  . Bunled libzip has been dropped,
    system library is now required.

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10. New Global Constants
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PGSQL:
  . Requires Postgres 9.3
    - PGSQL_DIAG_SCHEMA_NAME
	- PGSQL_DIAG_TABLE_NAME
	- PGSQL_DIAG_COLUMN_NAME
	- PGSQL_DIAG_DATATYPE_NAME
	- PGSQL_DIAG_CONSTRAINT_NAME
  . Requires Postgres 9.6
    - PGSQL_DIAG_SEVERITY_NONLOCALIZED

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11. Changes to INI File Handling
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- birdstep.max_links
  . This INI directive has been removed.

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12. Windows Support
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13. Other Changes
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