Ensure ctype_string is NULL for C locale

We already document that this is the case, but currently it's only
true if setlocale() has not been called. Make sure ctype_string is
always

Ensure ctype_string is NULL for C locale

We already document that this is the case, but currently it's only
true if setlocale() has not been called. Make sure ctype_string is
always NULL, even with an explicit "C" locale call, so we can
more efficiently check whether we are in the "C" locale.

Closes GH-5542.

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Rename locale_string to ctype_string

To make it more obvious that this only refers to the LC_CTYPE
locale.

Folder marks

Add str_starts_with() and str_ends_with()

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

Closes GH-5300.

Use ascii lowercase if locale is default C

Treat invalid characters in basename() consistently

Always simply ignore (pass through) them. Previously the behavior
depended on where the invalid character occurred, as it messed
u

Treat invalid characters in basename() consistently

Always simply ignore (pass through) them. Previously the behavior
depended on where the invalid character occurred, as it messed
up the state management.

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Clean up naming in basename() implementation

Revert "Merge branch 'sse2_strtolower' of https://github.com/laruence/php-src"

This reverts commit 5a6373f904c6497551cd53baf323ddb854a553e1, reversing
changes made to 45cb42166d4a53fe015

Revert "Merge branch 'sse2_strtolower' of https://github.com/laruence/php-src"

This reverts commit 5a6373f904c6497551cd53baf323ddb854a553e1, reversing
changes made to 45cb42166d4a53fe0154be08097f112d6ec72a27.

This breaks strtolower-win32.phpt.

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Merge branch 'sse2_strtolower' of https://github.com/laruence/php-src

* 'sse2_strtolower' of https://github.com/laruence/php-src:
Use ascii lowercase if locale is default C

Fix ifunc resolver return type warning

Use ascii lowercase if locale is default C

Improve a last couple of argument error messages

Closes GH-5404

Improve some TypeError and ValueError messages

Closes GH-5377

Improve argument error messages in ext/standard

Closes GH-5198

Add str_contains() function

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

Closes GH-5179.

Fixed bug #75902

Don't special-case nested arrays/objects in str_replace(), instead
perform a string cast on them as well. For arrays, this will always
result in the usual conversion

Fixed bug #75902

Don't special-case nested arrays/objects in str_replace(), instead
perform a string cast on them as well. For arrays, this will always
result in the usual conversion warning.

This behavior is consistent with preg_replace(). If we didn't want
to cast the array to string here, we should instead perform the
replacement recursively. Silently copying it is just confusing.

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Change argument error message format

Closes GH-5211

Make type error messages more consistent

Closes GH-5092

Remove state pointer argument from php_strip_tags

Merge branch 'PHP-7.4'

* PHP-7.4:
Yet another check for php_strip_tags_ex()

Yet another check for php_strip_tags_ex()

Merge branch 'PHP-7.3' into PHP-7.4

* PHP-7.3:
Yet another check for php_strip_tags_ex()

Yet another check for php_strip_tags_ex()

Merge branch 'PHP-7.4'

* PHP-7.4:
More checks for php_strip_tags_ex

Merge branch 'PHP-7.3' into PHP-7.4

* PHP-7.3:
More checks for php_strip_tags_ex