Return empty string instead of NULL in serialize().

Modifiy its return type accordingly and arginfo.

Add stubs for standard library

Add stubs for another batch of standard functions

Remove magic quotes legacy

Remove ezmlm_hash() function

Remove money_format() function

Remove convert_cyr_string() function

Remove hebrevc() function

Support "string or array" in zpp

This is one of our more common argument unions. Usage is just
prototyped in a few places, certainly not a full conversion.

I'm removing the str_

Support "string or array" in zpp

This is one of our more common argument unions. Usage is just
prototyped in a few places, certainly not a full conversion.

I'm removing the str_replace.phpt test, because aparently it was
split up into smaller tests at some point, but the original has
not been removed.

Closes GH-4970.

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Promote warning to exception in log() function

Make some opcache types consistent with reflection information

Remove functions such as filter_id() where reference counts and types are
identical to what's in opcache.

Remove n

Make some opcache types consistent with reflection information

Remove functions such as filter_id() where reference counts and types are
identical to what's in opcache.

Remove null types from zend_func_info.c that aren't in Reflection
(php would throw now)

Fix the Reflection type information for assert_options()

php > assert_options(ASSERT_CALLBACK, static function() {});
php > var_export(assert_options(ASSERT_CALLBACK));
Closure::__set_state(array(
))

Closes GH-4958.

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Add union return types with one class

Support union types for args in gen stubs

Using this requires care! The zpp implementation for this union
must be consistent with the arginfo implementation!

Apart from array|ob

Support union types for args in gen stubs

Using this requires care! The zpp implementation for this union
must be consistent with the arginfo implementation!

Apart from array|object, this is probably only the case for
int|float right now.

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password_hash() can't return false

Add union return types for function stubs

Add support for union types in stubs

This is the MVP for supporting union types in PHP stubs. Return
types with only builtin types work, which is the part we mainly
need.

Cl

Add support for union types in stubs

This is the MVP for supporting union types in PHP stubs. Return
types with only builtin types work, which is the part we mainly
need.

Closes GH-4895.

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Add stubs for standard lib functions

Fix consistency issues with array accesses warnings/exceptions

* Change a number of "resource used as offset" notices to warnings,
which were previously missed.
* Throw the "res

Fix consistency issues with array accesses warnings/exceptions

* Change a number of "resource used as offset" notices to warnings,
which were previously missed.
* Throw the "resource used as offset" warning for isset() as well.
* Make array_key_exists() behavior with regard to different key
types consistent with isset() and normal array accesses. All key
types now use the usual coercions and array/object keys throw
TypeError.

Closes GH-4887.

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Warn on strtr(["" => "x"])

Previously:
* If only ["" => "x"] was present, the original string was returned
without warning.
* If both ["" => "x"] and at least one more eleme

Warn on strtr(["" => "x"])

Previously:
* If only ["" => "x"] was present, the original string was returned
without warning.
* If both ["" => "x"] and at least one more element was present,
false was returned without warning.

New behavior:
* Ignore "" keys in the replacement array (and perform any remaining
replacement).
* Throw a warning indicating that an empty string replacement has
been ignored.

Closes GH-4792.

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Promote mt_rand() min/max warning to ValueError

Add stubs for various standard functions

Closes GH-4851.

Add stubs for directory and file functions

Allow array_splice() length to be null

Accept null lengths for substr functions()

If a null $length is passed to any of these functions, behave as if no
parameter was passed:

- substr()
- substr_count()
-

Accept null lengths for substr functions()

If a null $length is passed to any of these functions, behave as if no
parameter was passed:

- substr()
- substr_count()
- substr_compare()
- iconv_substr()

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Fix required number of arguments in stubs

* get_parent_class() argument is optional
* Mark array_filter() $callback as optional
* The $base of gmp_strval() is optional
* DateTime

Fix required number of arguments in stubs

* get_parent_class() argument is optional
* Mark array_filter() $callback as optional
* The $base of gmp_strval() is optional
* DateTime constructor also accepts zero arguments
* hash_update_file() stream context is optional
* xmlwriter_write_dtd_entity() $isparam argument is optional

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