micro-optimization

Reset Bucket->key of deleted HastTable elemets to NULL.

This allows elimination of some Z_ISUNDEF(Bucket->val) checks.

Avoid useless symbol table reattaching on retutn from an included op_array

Don't execute INCLUDE for empty op_arrays.

Don't call zend_attach/detach_symbol_table() for op_arrays without local variables

Merge branch 'PHP-8.1'

* PHP-8.1:
Fix array clobbering by user error handler

Fix array clobbering by user error handler

Fixes oss-fuzz #42363

Merge branch 'PHP-8.1'

* PHP-8.1:
Move common code into helper

Move common code into helper

Merge branch 'PHP-8.1'

* PHP-8.1:
Combine ADDREF/DELREF

Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
Combine ADDREF/DELREF

Combine ADDREF/DELREF

Merge branch 'PHP-8.1'

* PHP-8.1:
Fix array clobering by user error handler

Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
Fix array clobering by user error handler

Fix array clobering by user error handler

Fixes oss-fuzz #42234

ZEND_INIT_FCALL is only produced when function exists at compile time (#7728)

Merge branch 'PHP-8.1'

* PHP-8.1:
Separate "cold" code

Separate "cold" code

Merge branch 'PHP-8.1'

* PHP-8.1:
Fix use after free because of data clobbering by user error handler

Fix use after free because of data clobbering by user error handler

Fixes oss-fuzz #41692

Merge branch 'PHP-8.1'

* PHP-8.1:
Add test
ws
Fix array object clobbering by user error handler

Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
Fix array object clobbering by user error handler

Fix array object clobbering by user error handler

Fixes oss-fuss #41605 and #41610

Merge branch 'PHP-8.1'

* PHP-8.1:
Fix clobering of operand by error handler in assignment to string offset

Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
Fix clobering of operand by error handler in assignment to string offset