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PHP 7: What's New and What's Changing - A Guide to Key Updates in PHP 7
- 1. PHP 7 Above and beyond
- 8. 100%+ Performance gain on most real-world applications
- 9. What is coming in PHP 7 that may break your existing code
- 10. What is coming in PHP 7 that will impact how you write PHP
- 11. Get PHP7 up and running
- 14. Backward Compatibility Breaking RFCs Continue output buffering despite aborted connection Replacing current json extension with jsond Make defining multiple default cases in a switch a syntax error Remove alternative PHP tags Abstract syntax tree Reclassify E_STRICT notices Reserve More Types in PHP7 Uniform Variable Syntax ZPP Failure on Overflow Constructor behavior of internal classes Fix "foreach" behavior Removal of dead or not yet PHP7 ported SAPIs and extensions Remove PHP 4 Constructors Fix handling of custom session handler return values
- 15. Backward Compatibility Breaking Continue output buffering despite aborted connection Replacing current json extension with jsond Make defining multiple default cases in a switch a syntax error Remove alternative PHP tags Abstract syntax tree Reclassify E_STRICT notices Reserve More Types in PHP7 Uniform Variable Syntax ZPP Failure on Overflow Constructor behavior of internal classes Fix "foreach" behavior Removal of dead or not yet PHP7 ported SAPIs and extensions Remove PHP 4 Constructors Fix handling of custom session handler return values
- 16. Make defining multiple default cases in a switch a syntax error https://3v4l.org/PYHog
- 17. Remove alternative PHP tags <% opening tag <%= opening tag with echo %> closing tag (<scripts+languages*=s*(php|"php"|'php')s*>)i opening tag (</script>)i closing tag
- 18. Remove alternative PHP tags <?= is not being removed
- 19. Reserve More Types in PHP 7 int float bool string true, false null resource object mixed numeric If your code uses any of these new reserved words as variable names or class names, change them now.
- 20. Removal of dead or not yet PHP7 ported SAPIs and extensions aolserver apache apache_hooks caudium continuity isapi milter phttpd pi3web roxen thttpd tux webjames apache2filter nsapi mysql ereg imap mcrypt interbase mssql oci8 pdo_dblib pdo_oci sybase_ct
- 21. Removal of dead or not yet PHP7 ported SAPIs and extensions aolserver apache apache_hooks caudium continuity isapi milter phttpd pi3web roxen thttpd tux webjames apache2filter nsapi mysql ereg imap mcrypt interbase mssql oci8 pdo_dblib pdo_oci sybase_ct
- 22. High Impact RFCs Spaceship Operator Anonymous Classes Bind Closure on Call Generator Return Expressions Generator Delegation Filtered unserialized() Exceptions in the Engine Easy User-Land CSPRNG Null Coalesce Operator Return Type Declarations Scalar Type Declarations Group Use Declarations
- 23. High Impact Spaceship Operator Anonymous Classes Bind Closure on Call Generator Return Expressions Generator Delegation Filtered unserialized() Exceptions in the Engine Easy User-Land CSPRNG Null Coalesce Operator Return Type Declarations Scalar Type Declarations Group Use Declarations
- 24. Combined Comparison (Spaceship) Operator PHP’s first trinary operator https://3v4l.org/RMPDK https://3v4l.org/Y4isF
- 25. Combined Comparison (Spaceship) Operator
- 27. Return Type Declarations https://3v4l.org/VEPNr __construct() cannot declare a return type __destruct() cannot declare a return type __clone() cannot declare a return type
- 28. Return Type Declarations When a sub-type overrides a parent method then the return type of the child must exactly match the parent and may not be omitted. If a mismatch is detected during compile time then E_COMPILE_ERROR will be issued. If a type mismatch is detected when the function returns then E_RECOVERABLE_ERROR will be issued. https://3v4l.org/D5AlG