Drop --without-libzip option from Travis

We need to build against the system libzip now.

Also add an UPGRADING note.

Revert "Implement #67331: Have parse_ini_file add empty entries"

This reverts commit 3f3e914df33793a36f51b4e44745d6a5aec4f685.

The commit broke some tests on Windows, and generally

Revert "Implement #67331: Have parse_ini_file add empty entries"

This reverts commit 3f3e914df33793a36f51b4e44745d6a5aec4f685.

The commit broke some tests on Windows, and generally needs more
though.

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Implement #67331: Have parse_ini_file add empty entries

Some INI processors allow to specify empty values by just giving the
key without the equals sign, for instance MySQL and Python.

Implement #67331: Have parse_ini_file add empty entries

Some INI processors allow to specify empty values by just giving the
key without the equals sign, for instance MySQL and Python. It appears
to be sensible to add this possibility to our INI parser, so that it
can be used for such INI files as well. We choose NULL as the value of
empty values.

This syntactical enhancement is a (minor) BC break, though, as can be
seen by the necessary change to bug49692.ini. The “comment” formerly
has been simply ignored, but now it would be parsed as key with an
empty value.

This PR is based on Adam's former patch.

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Change default of $variant param of idn_to_ascii() and idn_to_utf8()

According to the “Deprecate and remove INTL_IDNA_VARIANT_2003” RFC[1],
we change the default of the $variant paramete

Change default of $variant param of idn_to_ascii() and idn_to_utf8()

According to the “Deprecate and remove INTL_IDNA_VARIANT_2003” RFC[1],
we change the default of the $variant parameter of `idn_to_ascii()` and
`idn_to_utf8()` from `INTL_IDNA_VARIANT_2003` to
`INTL_IDNA_VARIANT_UTS46`.

[1] <https://wiki.php.net/rfc/deprecate-and-remove-intl_idna_variant_2003>

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Require ICU ≥ 50.1

Given that ICU is a set of lively developed libraries, that ICU 50.1
has been released on 2012-11-05, and PHP 7.4 is scheduled to be
released seven years after it,

Require ICU ≥ 50.1

Given that ICU is a set of lively developed libraries, that ICU 50.1
has been released on 2012-11-05, and PHP 7.4 is scheduled to be
released seven years after it, we consider it appropriate to ditch
these legacy versions.

Particularly, that would be a reasonable groundwork to implement part
two of the “Deprecate and remove INTL_IDNA_VARIANT_2003” RFC[1], namely
to default idn_to_ascii()'s and idn_to_utf8()'s $variant parameter to
INTL_IDNA_VARIANT_UTS46, which is not defined in ICU < 4.6.

See also the related discussion on internals@[2].

[1] <https://wiki.php.net/rfc/deprecate-and-remove-intl_idna_variant_2003>
[2] <http://news.php.net/php.internals/101626>ff

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Renumber ZEND_ACC_... flags

Prepare UPGRADING(.INTERNALS) for PHP 7.4

We also add this as task to README.RELEASE_PROCESS, so that it's not
overlooked next time.

Fix UPGRADING

Update UPGRADING wrt. samesite cookie RFC

Cf. <https://wiki.php.net/rfc/same-site-cookie>.

Update NEWS and UPGRADING with info about syslog.filter

Add UPGRADING notes for deprecations

[ci skip] Add new global MBString constants to UPGRADING

The constants are mentioned further up in the New Features section,
but weren't explicitly listed under the New Global Constants

[ci skip] Add new global MBString constants to UPGRADING

The constants are mentioned further up in the New Features section,
but weren't explicitly listed under the New Global Constants section.

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Add implementation and tests for new methods - array_key_first(array $a) Returns the key of the first element or null - array_key_last(array $a) Returns the key of the last element or null

FILTER_FLAG_(SCHEME|HOST)_REQUIRED are now deprecated

Deprecate case-insensitive constants

RFC: https://wiki.php.net/rfc/case_insensitive_constant_deprecation

Export stdClass objects using (object) cast (fixes #48016)

Before this change, var_export()'s output for stdClass objects calls
the non-existent stdClass::__set_state method, and is ther

Export stdClass objects using (object) cast (fixes #48016)

Before this change, var_export()'s output for stdClass objects calls
the non-existent stdClass::__set_state method, and is therefore useless.

This commit makes var_export() output an (object) cast from an array
instead, which when evaluated, will produce a stdClass object. Other
classes see unchanged output.

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Added the 'add_slashes' sanitization filter (FILTER_SANITIZE_ADD_SLASHES) as an alias to 'magic_quotes' (FILTER_SANITIZE_MAGIC_QUOTES) so we can move past our "magical" legacy.

Update NEWS and UPGRADING for fpm_get_status addition

Fixed bug #76136 (stream_socket_get_name enclosed IPv6 in brackets)

The IPv6 IP of a socket is provided by inet_ntop() as a string, but
this function doesn't enclose the IP in brackets.

Fixed bug #76136 (stream_socket_get_name enclosed IPv6 in brackets)

The IPv6 IP of a socket is provided by inet_ntop() as a string, but
this function doesn't enclose the IP in brackets. This patch adds
them in the php_network_populate_name_from_sockaddr() function.

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Warn if continue is used on switch

Supersedes RFC https://wiki.php.net/rfc/continue_on_switch_deprecation
by generating a warning instead of deprecating and removing this
functionali

Warn if continue is used on switch

Supersedes RFC https://wiki.php.net/rfc/continue_on_switch_deprecation
by generating a warning instead of deprecating and removing this
functionality.

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Add UPGRADING for mb_ereg changes

Also some minor code cleanup.

NEW and UPGRADING

Argument unpacking with Traversables and non-integer keys.
Changed error message, added UPGRADING note and test.

Fixed bug #63217

Don't automatically convert literal string keys to integers on
array access, as we may be dealing with an ArrayAccess object,
rather than a plain array.

Update NEWS, UPGRADING and default php.ini files with syslog changes