Hereby, interned strings are supported in thread safe PHP. The patch
implements two types of interned strings
- interning per process, strings are not freed till process end
- interning per request, strings are freed at request end
There is no runtime interning.
With Opcache, all the permanent iterned strings are copied into SHM on
startup, additional copying into SHM might happen on demand.
Instead decide whether a function returned by reference or by value
by checking whether the return value has REFERENCE type. This means
that functions returning by reference must always return a reference
and functions returning by value must not return a reference.
Squashed commit of the following:
commit e05d3b6732
Author: Andrea Faulds <ajf@ajf.me>
Date: Wed Mar 30 01:43:35 2016 +0100
UPGRADING and NEWS
commit 6caf1d4585
Author: Andrea Faulds <ajf@ajf.me>
Date: Sun Mar 20 21:18:33 2016 +0000
Fixes
commit 6dadb1b0ef
Author: Andrea Faulds <ajf@ajf.me>
Date: Sun Feb 14 02:15:01 2016 +0000
Add test for numeric string errors in assignment
commit bd5f04e8dd
Author: Andrea Faulds <ajf@ajf.me>
Date: Sat Feb 13 23:53:05 2016 +0000
Add test for numeric string errors
commit c72e92f16d
Author: Andrea Faulds <ajf@ajf.me>
Date: Tue Jan 26 23:28:33 2016 +0000
Add test for scientific notation in integer operations
commit d94c08852d
Author: Andrea Faulds <ajf@ajf.me>
Date: Sun Feb 14 01:25:57 2016 +0000
Disable optimiser evaluation for numeric string errors
commit 30ee954ed1
Author: Andrea Faulds <ajf@ajf.me>
Date: Sun Feb 14 01:46:25 2016 +0000
fixup
commit a6403b79e0
Author: Andrea Faulds <ajf@ajf.me>
Date: Sat Feb 13 22:00:27 2016 +0000
Do not convert error-causing numeric strings ahead-of-time
commit f9dc354014
Author: Andrea Faulds <ajf@ajf.me>
Date: Sat Feb 13 19:15:38 2016 +0000
Disable compile-time evaluation for numeric string errors
commit e05b0cc849
Author: Andrea Faulds <ajf@ajf.me>
Date: Fri Feb 5 11:42:26 2016 +0000
Make _zval_get_long_func_noisy function for inlining
commit 84d66321a5
Author: Andrea Faulds <ajf@ajf.me>
Date: Tue Jan 26 23:10:00 2016 +0000
Update tests
commit 5ac4a0cc4b
Author: Andrea Faulds <ajf@ajf.me>
Date: Tue Jan 26 22:08:19 2016 +0000
Use is_numeric_string_ex for zval_get_long etc.
commit c21f088485
Author: Andrea Faulds <ajf@ajf.me>
Date: Thu Jan 7 21:13:04 2016 +0000
Update tests
commit 63e214cf81
Author: Andrea Faulds <ajf@ajf.me>
Date: Wed Jan 6 00:28:01 2016 +0000
Warn on non-/bad numeric strings in arithmetic
