Add a new imap_is_open() function to check that a connection object is still valid

Merge branch 'PHP-8.1'

* PHP-8.1:
Fix GH-9309: Segfault when connection is used after imap_close()

Fix GH-9309: Segfault when connection is used after imap_close()

We actually need to check whether `php_imap_object.imap_stream` is
`NULL` to detect that the connection has already been

Fix GH-9309: Segfault when connection is used after imap_close()

We actually need to check whether `php_imap_object.imap_stream` is
`NULL` to detect that the connection has already been closed.

Closes GH-9313.

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Mark parameter in ext/imap as sensitive

Declare ext/imap constants in stubs (#8715)

Use more compact representation for packed arrays.

- for packed arrays we store just an array of zvals without keys.
- the elements of packed array are accessible throuf as ht->arPacked[

Use more compact representation for packed arrays.

- for packed arrays we store just an array of zvals without keys.
- the elements of packed array are accessible throuf as ht->arPacked[i]
instead of ht->arData[i]
- in addition to general ZEND_HASH_FOREACH_* macros, we introduced similar
familied for packed (ZEND_HASH_PACKED_FORECH_*) and real hashes
(ZEND_HASH_MAP_FOREACH_*)
- introduced an additional family of macros to access elements of array
(packed or real hashes) ZEND_ARRAY_ELEMET_SIZE, ZEND_ARRAY_ELEMET_EX,
ZEND_ARRAY_ELEMET, ZEND_ARRAY_NEXT_ELEMENT, ZEND_ARRAY_PREV_ELEMENT
- zend_hash_minmax() prototype was changed to compare only values

Because of smaller data set, this patch may show performance improvement
on some apps and benchmarks that use packed arrays. (~1% on PHP-Parser)

TODO:
- sapi/phpdbg needs special support for packed arrays (WATCH_ON_BUCKET).
- zend_hash_sort_ex() may require converting packed arrays to hash.

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Merge branch 'PHP-8.0'

* PHP-8.0:
Fix maybe-uninitialized warning

Fix maybe-uninitialized warning

Some GCC versions don't like zend_try in loop. Avoid the issue
by pulling it out of the loop, we don't particularly care about
skipping further warnin

Fix maybe-uninitialized warning

Some GCC versions don't like zend_try in loop. Avoid the issue
by pulling it out of the loop, we don't particularly care about
skipping further warnings if a bailout occurs, just that it
does not interrupt shutdown.

Closes GH-7380.

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Merge branch 'PHP-8.0'

* PHP-8.0:
Prevent bailout during imap shutdown error reporting

Merge branch 'PHP-7.4' into PHP-8.0

* PHP-7.4:
Prevent bailout during imap shutdown error reporting

Prevent bailout during imap shutdown error reporting

This is a non-intrusive, minimal fix for bug #81316, which prevents
a bailout during imap RSHUTDOWN and prevents the basic shutdown

Prevent bailout during imap shutdown error reporting

This is a non-intrusive, minimal fix for bug #81316, which prevents
a bailout during imap RSHUTDOWN and prevents the basic shutdown
handler from being skipped.

I wasn't able to make the issue reproduce in a small test.

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Fix typos (#7327)

Not serializable flag permeation

Deprecate imap NIL constant

Part of https://wiki.php.net/rfc/deprecations_php_8_1.

Convert some recently introduced zend_bool to bool

As well as `scripts/dev/check_parameters.php` utility.

Cfr. 3e01f5afb1b52fe26a956190296de0192eedeec1

Use free_obj in IMAP\Connection

Looks like this incorrect pattern was copied from the FTP
implementation.

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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Convert IMAPConnection to IMAP\Connection

Merge branch 'PHP-8.0'

* PHP-8.0:
Fix build warning

Merge branch 'PHP-7.4' into PHP-8.0

* PHP-7.4:
Fix build warning

Fix build warning

This causes the build to fail on PHP-8.0 and higher.

Merge branch 'PHP-8.0'

* PHP-8.0:
Fix #80710: imap_mail_compose() header injection

Merge branch 'PHP-7.4' into PHP-8.0

* PHP-7.4:
Fix #80710: imap_mail_compose() header injection

Merge branch 'PHP-7.3' into PHP-7.4

* PHP-7.3:
Fix #80710: imap_mail_compose() header injection

Fix #80710: imap_mail_compose() header injection

Like `mail()` and `mb_send_mail()`, `imap_mail_compose()` must prevent
header injection. For maximum backward compatibility, we still al

Fix #80710: imap_mail_compose() header injection

Like `mail()` and `mb_send_mail()`, `imap_mail_compose()` must prevent
header injection. For maximum backward compatibility, we still allow
header folding for general headers, and still accept trailing line
breaks for address lists.

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