Reduce memory allocated by var_export, json_encode, serialize, and other (#8902)

smart_str uses an over-allocated string to optimize for append operations. Functions that use smart_str tend

Reduce memory allocated by var_export, json_encode, serialize, and other (#8902)

smart_str uses an over-allocated string to optimize for append operations. Functions that use smart_str tend to return the over-allocated string directly. This results in unnecessary memory usage, especially for small strings.

The overhead can be up to 231 bytes for strings smaller than that, and 4095 for other strings. This can be avoided for strings smaller than `4096 - zend_string header size - 1` by reallocating the string.

This change introduces `smart_str_trim_to_size()`, and calls it in `smart_str_extract()`. Functions that use `smart_str` are updated to use `smart_str_extract()`.

Fixes GH-8896

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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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Merge branch 'PHP-7.4'

* PHP-7.4:
Fix #73527: Invalid memory access in php_filter_strip

Merge branch 'PHP-7.3' into PHP-7.4

* PHP-7.3:
Fix #73527: Invalid memory access in php_filter_strip

Fix #73527: Invalid memory access in php_filter_strip

Add quiet parameter to internal HTML entities API

In some places, we need to make sure that no warnings are thrown
due to unknown encoding. The error reporting code tried to avoid
th

Add quiet parameter to internal HTML entities API

In some places, we need to make sure that no warnings are thrown
due to unknown encoding. The error reporting code tried to avoid
this by determining a "safe charset", but this introduces subtle
discrepancies in which charset is picked (normally
internal_encoding takes precedence). Avoid this by suppressing
the warning in the first place.

While here, use the fallback logic to print error messages with
substitution characters more consistently, to avoid skipping
parts of the error message entirely.

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Remove state pointer argument from php_strip_tags

Remove dead code in sanitizing_filter.c of the filter extension

Remove FILTER_SANITIZE_MAGIC_QUOTES filter

Remove mention of PHP major version in Copyright headers

Closes GH-4732.

Deprecate FILTER_SANITIZE_MAGIC_QUOTES

Remove local variables

This patch removes the so called local variables defined per
file basis for certain editors to properly show tab width, and
similar settings. These are mainly

Remove local variables

This patch removes the so called local variables defined per
file basis for certain editors to properly show tab width, and
similar settings. These are mainly used by Vim and Emacs editors
yet with recent changes the once working definitions don't work
anymore in Vim without custom plugins or additional configuration.
Neither are these settings synced across the PHP code base.

A simpler and better approach is EditorConfig and fixing code
using some code style fixing tools in the future instead.

This patch also removes the so called modelines for Vim. Modelines
allow Vim editor specifically to set some editor configuration such as
syntax highlighting, indentation style and tab width to be set in the
first line or the last 5 lines per file basis. Since the php test
files have syntax highlighting already set in most editors properly and
EditorConfig takes care of the indentation settings, this patch removes
these as well for the Vim 6.0 and newer versions.

With the removal of local variables for certain editors such as
Emacs and Vim, the footer is also probably not needed anymore when
creating extensions using ext_skel.php script.

Additionally, Vim modelines for setting php syntax and some editor
settings has been removed from some *.phpt files. All these are
mostly not relevant for phpt files neither work properly in the
middle of the file.

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Remove yearly range from copyright notice

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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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.

Changed php_add[c]slashes prototypes (removed should_free argument)

Fix overflow, int var used in loop with size_t counter

year++

Fixed wrong usage of old ZPP API.

Update copyright headers to 2017

Fixed compilation warnings

Fix bug #71637: Multiple Heap Overflow due to integer overflows

Merge branch 'PHP-5.6' into PHP-7.0

* PHP-5.6:
Happy new year (Update copyright to 2016)

Happy new year (Update copyright to 2016)

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