Fix #77943: imageantialias($image, false); does not work

Firstly, we must not call `gdImageSetAntiAliased()` (which sets the
color to anti-alias), but rather modify the `gdImage.AA` flag

Fix #77943: imageantialias($image, false); does not work

Firstly, we must not call `gdImageSetAntiAliased()` (which sets the
color to anti-alias), but rather modify the `gdImage.AA` flag.
Furthermore, we have to actually use the supplied boolean value.

We also make sure that we don't attempt to enable anti-aliasing for
palette images.

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Trim trailing whitespace in source code files

Fix #73957: signed integer conversion in imagescale()

We must not pass values to `gdImageScale()` which cannot be represented
by an `unsigned int`. Instead we return FALSE, according to

Fix #73957: signed integer conversion in imagescale()

We must not pass values to `gdImageScale()` which cannot be represented
by an `unsigned int`. Instead we return FALSE, according to what we
already did for negative integers.

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Fix imagesetinterpolation arginfo

imagesetinterpolation only requires one parameter.

year++

year++

Fix bug #75437 Wrong reflection on imagewebp

Fix bug #74031

Fix incorrect parameter count for imagepng function

Update copyright headers to 2017

Update copyright headers to 2017

Implement #69606: Support BMPs (added in GD 2.1.0)

We add PHP bindings for libgd's features to read and write BMP files, which
are available as of libgd 2.1.0.

As PHP's bundled

Implement #69606: Support BMPs (added in GD 2.1.0)

We add PHP bindings for libgd's features to read and write BMP files, which
are available as of libgd 2.1.0.

As PHP's bundled libgd doesn't yet include the respective features of the
external libgd, we add these.

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Update copyright headers to 2017

remove TSRMLS_*

Add PHP bindings for setting and getting the image resolution

We expose the image resolution related GD functionality to userland
by introducing `imageresolution()` as getter/setter. Giv

Add PHP bindings for setting and getting the image resolution

We expose the image resolution related GD functionality to userland
by introducing `imageresolution()` as getter/setter. Given only the
image argument, it returns the current resolution as indexed array.
Given only a second argument, it sets the horizontal and vertical
resolution to this value. Given three arguments, it sets the horizontal
and vertical resolution to the given arguments, respectively.

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Mark functions as PHP_DEP_FE instead of manually emitting the notice

RFC: Deprecate png2wbmp() and jpegwbmp()

See <https://wiki.php.net/rfc/deprecate-png-jpeg-2wbmp>.

Remove unused code

There is no gif2wbmp() or such, and it is highly unlikely that it'll be
ever added, so we remove the unused code.

fix syslog interference

Fix #73272: imagescale() affects imagesetinterpolation()

We must not permanently change the interpolation method, but rather
have to restore the old method after we're done with scaling

Fix #73272: imagescale() affects imagesetinterpolation()

We must not permanently change the interpolation method, but rather
have to restore the old method after we're done with scaling the image.

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Unify error handling of bundled and external libgd

There's no need anymore to call an own error handler directly. Instead we
register our error handler and call libgd's error functions (

Unify error handling of bundled and external libgd

There's no need anymore to call an own error handler directly. Instead we
register our error handler and call libgd's error functions (which will
forward). We do this regardless of compiling with the bundled or an external
libgd.

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Change gdImageTrueColorToPalette() to return success/failure

We're porting the relevant changes from
<https://github.com/libgd/libgd/commit/34a00a40>.

We also check the return v

Change gdImageTrueColorToPalette() to return success/failure

We're porting the relevant changes from
<https://github.com/libgd/libgd/commit/34a00a40>.

We also check the return value in the PHP binding, and throw E_WARNING if
the conversion failed.

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Implement request #33066: Add GD Image Function gdImageOpenPolygon()

gdImageOpenPolygon() has been introduced with líbgd 2.0.29, so we finally
add a PHP binding for it, and port the resp

Implement request #33066: Add GD Image Function gdImageOpenPolygon()

gdImageOpenPolygon() has been introduced with líbgd 2.0.29, so we finally
add a PHP binding for it, and port the respective libgd functionality to
PHP's bundled libgd.

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Add support for gdEffectMultiply

gdLayerMultiply() has been introduced in libgd 2.1.1, and as such would have
been already available for imagelayereffect() with a system libgd. We port

Add support for gdEffectMultiply

gdLayerMultiply() has been introduced in libgd 2.1.1, and as such would have
been already available for imagelayereffect() with a system libgd. We port
the respective code to the bundled libgd, and also make IMG_EFFECT_MULTIPLY
available to userland.

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Switch to libgd anti-aliased drawing API

Instead of rolling our own in the bundled libgd, we use libgd's anti-aliased
drawing API. This way imageantialias() is also available, when built

Switch to libgd anti-aliased drawing API

Instead of rolling our own in the bundled libgd, we use libgd's anti-aliased
drawing API. This way imageantialias() is also available, when built against
a system libgd.

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Refactor imagegammacorrect()

We apply the law `(b**r)**s == b**(r*s)` which holds for all non-negative b
and positive r,s, so a single pow() suffices. Furthermore, we precompute the

Refactor imagegammacorrect()

We apply the law `(b**r)**s == b**(r*s)` which holds for all non-negative b
and positive r,s, so a single pow() suffices. Furthermore, we precompute the
gamma, so the refactored code is simpler and faster.

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