Fix #74267: segfault with streams and invalid data

If the current character is a line break character, it cannot be a tab
or space character, so we would always fail with an invalid sequ

Fix #74267: segfault with streams and invalid data

If the current character is a line break character, it cannot be a tab
or space character, so we would always fail with an invalid sequence
error. Obviously, these `scan_stat == 4` conditions are meant to be
exclusive.

Furthermore, if `in_pp == NULL || in_left_p == NULL` is true, we hit a
segfault if we are not returning right away. Obviously, the additional
constraints don't make sense, so we remove them.

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Fix null pointer deref in qprint-encode filter (bug #77231)

Remove extra semicolons

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
use

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.

In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.

This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.

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Deprecate string.strip_tags filter

Part of https://wiki.php.net/rfc/deprecations_php_7_3.

Fix string.strip_tags filter

Was segfaulting if no allowed tags are specified and performing an
out of bounds read if they were.

year++

year++

year++

typo

Move constants into read-only data segment

Fix unsigned comparison

Avoid unnecessary reference-counting on strings.

Remove superfluous allocation checks around ZMM-based functions

Drop unnecessary allocator return value checks

Drop unnecessary checks of pemalloc() return value

Update copyright headers to 2017

Update copyright headers to 2017

Update copyright headers to 2017

catch up with stream datatypes

Happy new year (Update copyright to 2016)

Cleanup (avoid reallocatios and side effects in php_strip_tags)

Use ZSTR_ API to access zend_string elements (this is just renaming without semantick changes).

Clean up some type conversions

While at it also fix some type checks in iconv and drop dead and
unported code in standard/filters.

bump year