Merge branch 'PHP-8.1'

* PHP-8.1:
Don't start new block after loop free

Don't start new block after loop free

This reverts the change from 493c91c7429ee4552d2b80a2648271e2ba97f15c.
Starting a new block means that in the common case where the loop var
fre

Don't start new block after loop free

This reverts the change from 493c91c7429ee4552d2b80a2648271e2ba97f15c.
Starting a new block means that in the common case where the loop var
free is not unreachable, we'll always merge back the block.

Instead fix the original problem by explicitly removing instructions
apart from the loop var free in block pass.

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Fix delayed early binding with optimization

It's possible for delayed early binding opcodes to get optimized
away if they are "unreachable". However, we still need to attempt
early b

Fix delayed early binding with optimization

It's possible for delayed early binding opcodes to get optimized
away if they are "unreachable". However, we still need to attempt
early binding for them. (In some cases we also corrupt the early
binding list outright during optimization, which is how I got here.)

Fix this by storing information about delayed early binding
independently of DECLARE_CLASS_DELAYED opcodes, so early binding is
performed even after the opcode has been dropped.

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Voidify zend_build_cfg()

It always returned SUCCESS

Use more appropriate types in Optimizer

Mainly using zend_result and bool instead of int

Remove special UNREACHABLE_FREE handling in block pass

This results in an assertion failure when running under -e,
because there is an additional EXT_STMT + NOP before the FREE.
I do

Remove special UNREACHABLE_FREE handling in block pass

This results in an assertion failure when running under -e,
because there is an additional EXT_STMT + NOP before the FREE.
I don't think there's a strong reason to handle UNREACHABLE_FREE
specially here (it's only important that we *do* handle it), so
I'm dropping the code rather than adjusting it to scan over
certain opcodes.

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Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as

Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as 3.0 states "php 5.1.1, 4.1.1, and earlier".
3. In some license comments is "at through the world-wide-web" while most is without "at", so deleted.
4. fixed indentation in some files before |

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Remove unnecessary php.h includes from Zend/

The Zend/ directory really shouldn't be including php headers.
These particular includes are plain unnecessary.

Fix spelling and grammar mistakes

This PR corrects misspellings identified by the check-spelling action.

The misspellings have been reported at jsoref@b6ba3e2#commitcomment-48946465

Fix spelling and grammar mistakes

This PR corrects misspellings identified by the check-spelling action.

The misspellings have been reported at jsoref@b6ba3e2#commitcomment-48946465

The action reports that the changes in this PR would make it happy: jsoref@602417c

Closes GH-6822.

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Introduce pseudo-keyword ZEND_FALLTHROUGH

And use it instead of comments

Move optimizer into core

This only moves the files, adjusts the build system, exports APIs
and does minor fixups to make sure the code builds.

This does not yet try to make the

Move optimizer into core

This only moves the files, adjusts the build system, exports APIs
and does minor fixups to make sure the code builds.

This does not yet try to make the optimizer usable independently
of opcache.

Closes GH-6642.

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