manual-php
Version:
1,346 lines (912 loc) • 29.9 kB
Markdown
# GD
* [gd_info - 获取当前安装的 GD 库的信息](#gdinfo)
* [getimagesize - 获取指定的图像大小](#getimagesize)
* [getimagesizefromstring - 从指定的字符串中获取图像的大小信息](#getimagesizefromstring)
* [image_type_to_extension - 获取指定的图像类型的文件后缀](#imagetypetoextension)
* [image_type_to_mime_type - 获取指定的图像类型的 MIME 类型](#imagetypetomimetype)
* [imageaffine - 返回经过仿射变换后的图像，剪切区域可选](#imageaffine)
* [imageaffinematrixconcat - 连接两个仿射变换矩阵](#imageaffinematrixconcat)
* [imageaffinematrixget - 获取仿射变换矩阵](#imageaffinematrixget)
* [imagealphablending - 设定图像的混色模式](#imagealphablending)
* [imageantialias - 是否使用抗锯齿功能](#imageantialias)
* [imagearc - 画椭圆弧](#imagearc)
* [imagebmp - 将 BMP 图像输出到浏览器或文件](#imagebmp)
* [imagechar - 水平地画一个字符](#imagechar)
* [imagecharup - 垂直地画一个字符](#imagecharup)
* [imagecolorallocate - 为一幅图像分配颜色](#imagecolorallocate)
* [imagecolorallocatealpha - 为一幅图像分配颜色和透明度](#imagecolorallocatealpha)
* [imagecolorat - 取得某像素的颜色索引值](#imagecolorat)
* [imagecolorclosest - 取得与指定的颜色最接近的颜色的索引值](#imagecolorclosest)
* [imagecolorclosestalpha - 取得与指定的颜色加透明度最接近的颜色](#imagecolorclosestalpha)
* [imagecolorclosesthwb - 取得与给定颜色最接近的色度的黑白色的索引](#imagecolorclosesthwb)
* [imagecolordeallocate - 取消图像颜色的分配](#imagecolordeallocate)
* [imagecolorexact - 取得指定颜色的索引值](#imagecolorexact)
* [imagecolorexactalpha - 取得指定的颜色加透明度的索引值](#imagecolorexactalpha)
* [imagecolormatch - 使一个图像中调色板版本的颜色与真彩色版本更能匹配](#imagecolormatch)
* [imagecolorresolve - 取得指定颜色的索引值或有可能得到的最接近的替代值](#imagecolorresolve)
* [imagecolorresolvealpha - 取得指定颜色加透明度的索引值或有可能得到的最接近的替代值](#imagecolorresolvealpha)
* [imagecolorset - 给指定调色板索引设定颜色](#imagecolorset)
* [imagecolorsforindex - 取得某索引的颜色](#imagecolorsforindex)
* [imagecolorstotal - 取得一幅图像的调色板中颜色的数目](#imagecolorstotal)
* [imagecolortransparent - 将某个颜色定义为透明色](#imagecolortransparent)
* [imageconvolution - 申请一个 3x3 的卷积矩阵](#imageconvolution)
* [imagecopy - 拷贝图像的一部分](#imagecopy)
* [imagecopymerge - 拷贝并合并图像的一部分](#imagecopymerge)
* [imagecopymergegray - 用灰度拷贝并合并图像的一部分](#imagecopymergegray)
* [imagecopyresampled - 重采样拷贝部分图像并调整大小](#imagecopyresampled)
* [imagecopyresized - 拷贝部分图像并调整大小](#imagecopyresized)
* [imagecreate - 新建一个基于调色板的图像](#imagecreate)
* [imagecreatefrombmp - 由文件或 URL 创建一个新图像](#imagecreatefrombmp)
* [imagecreatefromgd2 - 从 GD2 文件或 URL 新建一图像](#imagecreatefromgd2)
* [imagecreatefromgd2part - 从给定的 GD2 文件或 URL 中的部分新建一图像](#imagecreatefromgd2part)
* [imagecreatefromgd - 从 GD 文件或 URL 新建一图像](#imagecreatefromgd)
* [imagecreatefromgif - 由文件或 URL 创建一个新图像](#imagecreatefromgif)
* [imagecreatefromjpeg - 由文件或 URL 创建一个新图像](#imagecreatefromjpeg)
* [imagecreatefrompng - 由文件或 URL 创建一个新图像](#imagecreatefrompng)
* [imagecreatefromstring - 从字符串中的图像流新建一图像](#imagecreatefromstring)
* [imagecreatefromwbmp - 由文件或 URL 创建一个新图像](#imagecreatefromwbmp)
* [imagecreatefromwebp - 由文件或 URL 创建一个新图像](#imagecreatefromwebp)
* [imagecreatefromxbm - 由文件或 URL 创建一个新图像](#imagecreatefromxbm)
* [imagecreatefromxpm - 由文件或 URL 创建一个新图像](#imagecreatefromxpm)
* [imagecreatetruecolor - 新建一个真彩色图像](#imagecreatetruecolor)
* [imagecrop - 将图像裁剪为给定的矩形](#imagecrop)
* [imagecropauto - 使用可用模式之一自动裁剪图像](#imagecropauto)
* [imagedashedline - 画一虚线](#imagedashedline)
* [imagedestroy - 销毁图像](#imagedestroy)
* [imageellipse - 画一个椭圆](#imageellipse)
* [imagefill - 区域填充](#imagefill)
* [imagefilledarc - 画一椭圆弧且填充](#imagefilledarc)
* [imagefilledellipse - 画一椭圆并填充](#imagefilledellipse)
* [imagefilledpolygon - 画一多边形并填充](#imagefilledpolygon)
* [imagefilledrectangle - 画一矩形并填充](#imagefilledrectangle)
* [imagefilltoborder - 区域填充到指定颜色的边界为止](#imagefilltoborder)
* [imagefilter - 对图像使用过滤器](#imagefilter)
* [imageflip - 使用给定模式翻转图像](#imageflip)
* [imagefontheight - 取得字体高度](#imagefontheight)
* [imagefontwidth - 取得字体宽度](#imagefontwidth)
* [imageftbbox - 给出一个使用 FreeType 2 字体的文本框](#imageftbbox)
* [imagefttext - 使用 FreeType 2 字体将文本写入图像](#imagefttext)
* [imagegammacorrect - 对 GD 图像应用 gamma 修正](#imagegammacorrect)
* [imagegd2 - 将 GD2 图像输出到浏览器或文件](#imagegd2)
* [imagegd - 将 GD 图像输出到浏览器或文件](#imagegd)
* [imagegetclip - 获取裁剪矩形](#imagegetclip)
* [imagegif - 输出图像到浏览器或文件](#imagegif)
* [imagegrabscreen - 截取整个屏幕](#imagegrabscreen)
* [imageinterlace - 激活或禁止隔行扫描](#imageinterlace)
* [imageistruecolor - 检查图像是否为真彩色图像](#imageistruecolor)
* [imagejpeg - 输出图像到浏览器或文件](#imagejpeg)
* [imagelayereffect - 设定 alpha 混色标志以使用绑定的 libgd 分层效果](#imagelayereffect)
* [imageline - 画一条线段](#imageline)
* [imageloadfont - 载入新字体](#imageloadfont)
* [imageopenpolygon - 绘制一个开放的多边形](#imageopenpolygon)
* [imagepalettecopy - 将调色板从一幅图像拷贝到另一幅](#imagepalettecopy)
* [imagepalettetotruecolor - 将基于调色板的图像转换为真彩色](#imagepalettetotruecolor)
* [imagepng - 以 PNG 格式将图像输出到浏览器或文件](#imagepng)
* [imagepolygon - 画一个多边形](#imagepolygon)
* [imagerectangle - 画一个矩形](#imagerectangle)
* [imageresolution - 获取或设置图像的分辨率](#imageresolution)
* [imagerotate - 用给定角度旋转图像](#imagerotate)
* [imagesavealpha - 设置标记以在保存 PNG 图像时保存完整的 alpha 通道信息（与单一透明色相反）](#imagesavealpha)
* [imagescale - 使用给定的新宽度和高度缩放图像](#imagescale)
* [imagesetbrush - 设定画线用的画笔图像](#imagesetbrush)
* [imagesetclip - 设置裁剪矩形](#imagesetclip)
* [imagesetinterpolation - 设置插值方法](#imagesetinterpolation)
* [imagesetpixel - 画一个单一像素](#imagesetpixel)
* [imagesetstyle - 设定画线的风格](#imagesetstyle)
* [imagesetthickness - 设定画线的宽度](#imagesetthickness)
* [imagesettile - 设定用于填充的贴图](#imagesettile)
* [imagestring - 水平地画一行字符串](#imagestring)
* [imagestringup - 垂直地画一行字符串](#imagestringup)
* [imagesx - 取得图像宽度](#imagesx)
* [imagesy - 取得图像高度](#imagesy)
* [imagetruecolortopalette - 将真彩色图像转换为调色板图像](#imagetruecolortopalette)
* [imagettfbbox - 取得使用 TrueType 字体的文本的范围](#imagettfbbox)
* [imagettftext - 用 TrueType 字体向图像写入文本](#imagettftext)
* [imagetypes - 返回当前 PHP 版本所支持的图像类型](#imagetypes)
* [imagewbmp - 以 WBMP 格式将图像输出到浏览器或文件](#imagewbmp)
* [imagewebp - 将 WebP 格式的图像输出到浏览器或文件](#imagewebp)
* [imagexbm - 将 XBM 图像输出到浏览器或文件](#imagexbm)
## gd_info
```php
var_dump(gd_info()); // array(14) { ["GD Version"]=> string(26) "bundled (2.1.0 compatible)" ["FreeType Support"]=> bool(true) ["FreeType Linkage"]=> string(13) "with freetype" ["GIF Read Support"]=> bool(true) ["GIF Create Support"]=> bool(true) ["JPEG Support"]=> bool(true) ["PNG Support"]=> bool(true) ["WBMP Support"]=> bool(true) ["XPM Support"]=> bool(true) ["XBM Support"]=> bool(true) ["WebP Support"]=> bool(true) ["BMP Support"]=> bool(true) ["TGA Read Support"]=> bool(true) ["JIS-mapped Japanese Font Support"]=> bool(false) }
```
## getimagesize
```php
var_dump(getimagesize(__DIR__ . '/example.jpg'));
var_dump(getimagesize('https://github.com/fluidicon.png'));
```
## getimagesizefromstring
```php
var_dump(getimagesizefromstring(file_get_contents(__DIR__ . '/example.jpg')));
var_dump(getimagesizefromstring(file_get_contents('https://github.com/fluidicon.png')));
```
## image_type_to_extension
```php
var_dump(image_type_to_extension(IMAGETYPE_GIF)); // string(4) ".gif"
var_dump(image_type_to_extension(IMAGETYPE_JPEG)); // string(5) ".jpeg"
var_dump(image_type_to_extension(IMAGETYPE_PNG)); // string(4) ".png"
var_dump(image_type_to_extension(IMAGETYPE_PNG, false)); // string(3) "png"
```
## image_type_to_mime_type
```php
var_dump(image_type_to_mime_type(IMAGETYPE_GIF)); // string(9) "image/gif"
var_dump(image_type_to_mime_type(IMAGETYPE_JPEG)); // string(10) "image/jpeg"
var_dump(image_type_to_mime_type(IMAGETYPE_PNG)); // string(9) "image/png"
```
## imageaffine
```php
$image = imagecreate(100, 100);
var_dump(imageaffine($image, [1, 0, 0, 1, 0, 0])); // resource(5) of type (gd)
```
## imageaffinematrixconcat
```php
$foo = imageaffinematrixget(IMG_AFFINE_TRANSLATE, ['x' => 2, 'y' => 3]);
$bar = imageaffinematrixget(IMG_AFFINE_SCALE, ['x' => 4, 'y' => 5]);
var_dump(imageaffinematrixconcat($foo, $bar));
```
## imageaffinematrixget
```php
var_dump(imageaffinematrixget(IMG_AFFINE_TRANSLATE, ['x' => 2, 'y' => 3]));
var_dump(imageaffinematrixget(IMG_AFFINE_SCALE, ['x' => 4, 'y' => 5]));
```
## imagealphablending
```php
$image = imagecreate(100, 100);
imagealphablending($image, true);
imagecolorallocate($image, 255, 255, 255);
imagefilledrectangle($image, 30, 30, 70, 70, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imageantialias
```php
$foo = imagecreatetruecolor(400, 100);
imagecolorallocate($foo, 0, 0, 0);
imageantialias($foo, true);
imageline($foo, 0, 0, 200, 100, imagecolorallocate($foo, 255, 0, 0));
$bar = imagecreate(200, 100);
imagecolorallocate($bar, 0, 0, 0);
imageline($bar, 0, 0, 200, 100, imagecolorallocate($bar, 255, 0, 0));
imagecopymerge($foo, $bar, 200, 0, 0, 0, 200, 100, 100);
header('Content-Type: image/png');
imagepng($foo);
```
## imagearc
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagearc($image, 50, 50, 50, 50, 0, 360, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagebmp
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
header('Content-Type: image/bmp');
imagebmp($image, __DIR__ . '/example.bmp');
imagebmp($image);
```
## imagechar
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagechar($image, 5, 0, 0, 'A', imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagecharup
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagecharup($image, 5, 0, 10, 'A', imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagecolorallocate
```php
$image = imagecreate(100, 100);
var_dump(imagecolorallocate($image, 255, 255, 255)); // int(0)
var_dump(imagecolorallocate($image, 100, 100, 100)); // int(1)
var_dump(imagecolorallocate($image, 0, 0, 0)); // int(2)
```
## imagecolorallocatealpha
```php
$image = imagecreate(100, 100);
var_dump(imagecolorallocatealpha($image, 255, 255, 255, 127)); // int(0)
var_dump(imagecolorallocatealpha($image, 100, 100, 100, 50)); // int(1)
var_dump(imagecolorallocatealpha($image, 0, 0, 0, 0)); // int(2)
```
## imagecolorat
```php
var_dump(imagecolorat(imagecreatefromjpeg(__DIR__ . '/example.jpg'), 100, 100));
```
## imagecolorclosest
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
var_dump(imagecolorclosest($image, 255, 255, 255));
```
## imagecolorclosestalpha
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
var_dump(imagecolorclosestalpha($image, 255, 255, 255, 50));
```
## imagecolorclosesthwb
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
var_dump(imagecolorclosesthwb($image, 255, 255, 255));
```
## imagecolordeallocate
```php
$image = imagecreate(100, 100);
$white = imagecolorallocate($image, 255, 255, 255);
imagecolordeallocate($image, $white);
$black = imagecolorallocate($image, 0, 0, 0);
header('Content-Type: image/png');
imagepng($image);
```
## imagecolorexact
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
var_dump(imagecolorexact($image, 255, 255, 255));
```
## imagecolorexactalpha
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
var_dump(imagecolorexactalpha($image, 255, 255, 255, 50));
```
## imagecolormatch
```php
$foo = imagecreatetruecolor(100, 100);
$bar = imagecreate(100, 100);
imagecolorallocate($bar, 255, 255, 255);
var_dump(imagecolormatch($foo, $bar)); // bool(true)
```
## imagecolorresolve
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
var_dump(imagecolorresolve($image, 255, 255, 255));
```
## imagecolorresolvealpha
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
var_dump(imagecolorresolvealpha($image, 255, 255, 255, 50));
```
## imagecolorset
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
imagecolorset($image, imagecolorat($image, 100, 100), 255, 255, 255);
```
## imagecolorsforindex
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
var_dump(imagecolorsforindex($image, imagecolorat($image, 100, 100)));
```
## imagecolorstotal
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
var_dump(imagecolorstotal($image));
```
## imagecolortransparent
```php
$image = imagecreatetruecolor(100, 100);
var_dump(imagecolortransparent($image));
```
## imageconvolution
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
imageconvolution($image, [[2, 0, 0], [0, -1, 0], [0, 0, -1]], 1, 127);
header('Content-Type: image/jpg');
imagejpeg($image);
```
## imagecopy
```php
$foo = imagecreate(100, 100);
imagecolorallocate($foo, 255, 0, 0);
$bar = imagecreate(100, 100);
imagecolorallocate($bar, 0, 255, 0);
imagecopy($foo, $bar, 50, 0, 0, 0, 50, 100);
header('Content-Type: image/png');
imagepng($foo);
```
## imagecopymerge
```php
$foo = imagecreate(100, 100);
imagecolorallocate($foo, 255, 0, 0);
$bar = imagecreate(100, 100);
imagecolorallocate($bar, 0, 255, 0);
imagecopymerge($foo, $bar, 50, 0, 0, 0, 50, 100, 100);
header('Content-Type: image/png');
imagepng($foo);
```
## imagecopymergegray
```php
$foo = imagecreate(100, 100);
imagecolorallocate($foo, 255, 0, 0);
$bar = imagecreate(100, 100);
imagecolorallocate($bar, 0, 255, 0);
imagecopymergegray($foo, $bar, 50, 0, 0, 0, 50, 100, 100);
header('Content-Type: image/png');
imagepng($foo);
```
## imagecopyresampled
```php
$foo = imagecreate(200, 200);
imagecolorallocate($foo, 255, 0, 0);
$bar = imagecreate(100, 100);
imagecolorallocate($bar, 0, 255, 0);
imagecopyresampled($foo, $bar, 0, 0, 0, 0, 200, 200, 100, 100);
header('Content-Type: image/png');
imagepng($foo);
```
## imagecopyresized
```php
$foo = imagecreate(200, 200);
imagecolorallocate($foo, 255, 0, 0);
$bar = imagecreate(100, 100);
imagecolorallocate($bar, 0, 255, 0);
imagecopyresized($foo, $bar, 0, 0, 0, 0, 200, 200, 100, 100);
header('Content-Type: image/png');
imagepng($foo);
```
## imagecreate
```php
var_dump(imagecreate(100, 100)); // resource(4) of type (gd)
```
## imagecreatefrombmp
```php
var_dump(imagecreatefrombmp(__DIR__ . '/example.bmp'));
```
## imagecreatefromgd2
```php
var_dump(imagecreatefromgd2(__DIR__ . '/example.gd2'));
```
## imagecreatefromgd2part
```php
var_dump(imagecreatefromgd2part(__DIR__ . '/example.gd2', 50, 50, 100, 100));
```
## imagecreatefromgd
```php
var_dump(imagecreatefromgd(__DIR__ . '/example.gd'));
```
## imagecreatefromgif
```php
var_dump(imagecreatefromgif(__DIR__ . '/example.gif')); // resource(5) of type (gd)
```
## imagecreatefromjpeg
```php
var_dump(imagecreatefromjpeg(__DIR__ . '/example.jpg')); // resource(5) of type (gd)
```
## imagecreatefrompng
```php
var_dump(imagecreatefrompng(__DIR__ . '/example.png')); // resource(5) of type (gd)
```
## imagecreatefromstring
```php
var_dump(imagecreatefromstring(file_get_contents(__DIR__ . '/example.jpg'))); // resource(6) of type (gd)
var_dump(imagecreatefromstring(file_get_contents('https://github.com/fluidicon.png'))); // resource(8) of type (gd)
```
## imagecreatefromwbmp
```php
var_dump(imagecreatefromwbmp(__DIR__ . '/example.wbmp'));
```
## imagecreatefromwebp
```php
var_dump(imagecreatefromwebp(__DIR__ . '/example.webp'));
```
## imagecreatefromxbm
```php
var_dump(imagecreatefromxbm(__DIR__ . '/example.xbm'));
```
## imagecreatefromxpm
```php
var_dump(imagecreatefromxpm(__DIR__ . '/example.xpm'));
```
## imagecreatetruecolor
```php
var_dump(imagecreatetruecolor(100, 100)); // resource(4) of type (gd)
```
## imagecrop
```php
var_dump(imagecrop(imagecreatefromjpeg(__DIR__ . '/example.jpg'), ['x' => 0, 'y' => 0, 'width' => 100, 'height' => 100])); // resource(6) of type (gd)
```
## imagecropauto
```php
var_dump(imagecropauto(imagecreatefromjpeg(__DIR__ . '/example.jpg'), IMG_CROP_DEFAULT)); // resource(6) of type (gd)
```
## imagedashedline
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagedashedline($image, 0, 0, 100, 100, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagedestroy
```php
var_dump(imagedestroy(imagecreate(100, 100))); // bool(true)
```
## imageellipse
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imageellipse($image, 50, 50, 50, 50, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagefill
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagefill($image, 0, 0, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagefilledarc
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagefilledarc($image, 50, 50, 50, 50, 0, 360, imagecolorallocate($image, 0, 0, 0), IMG_ARC_PIE);
header('Content-Type: image/png');
imagepng($image);
```
## imagefilledellipse
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagefilledellipse($image, 50, 50, 50, 50, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagefilledpolygon
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagefilledpolygon($image, [20, 30, 50, 10, 80, 30, 70, 85, 30, 85], 5, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagefilledrectangle
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagefilledrectangle($image, 20, 20, 80, 80, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagefilltoborder
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);
imageline($image, 80, 0, 80, 100, $black);
imagefilltoborder($image, 0, 0, $black, imagecolorallocate($image, 255, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagefilter
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
imagefilter($image, IMG_FILTER_NEGATE);
header('Content-Type: image/jpg');
imagejpeg($image);
```
## imageflip
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
var_dump(imageflip($image, IMG_FLIP_HORIZONTAL)); // bool(true)
var_dump(imageflip($image, IMG_FLIP_VERTICAL)); // bool(true)
var_dump(imageflip($image, IMG_FLIP_BOTH)); // bool(true)
```
## imagefontheight
```php
var_dump(imagefontheight(1)); // int(8)
var_dump(imagefontheight(2)); // int(13)
var_dump(imagefontheight(3)); // int(13)
```
## imagefontwidth
```php
var_dump(imagefontwidth(1)); // int(5)
var_dump(imagefontwidth(2)); // int(6)
var_dump(imagefontwidth(3)); // int(7)
```
## imageftbbox
```php
var_dump(imageftbbox(20, 0, 'Arial.ttf', 'foo'));
```
## imagefttext
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagefttext($image, 20, 0, 20, 50, imagecolorallocate($image, 0, 0, 0), 'Arial.ttf', 'foo');
header('Content-Type: image/png');
imagepng($image);
```
## imagegammacorrect
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
imagegammacorrect($image, 1, 2);
header('Content-Type: image/jpg');
imagejpeg($image);
```
## imagegd2
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagegd2($image, __DIR__ . '/example.gd2');
```
## imagegd
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagegd($image, __DIR__ . '/example.gd');
```
## imagegetclip
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagesetclip($image, 20, 20, 80, 80);
var_dump(imagegetclip($image)); // array(4) { [0]=> int(20) [1]=> int(20) [2]=> int(80) [3]=> int(80) }
```
## imagegif
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
header('Content-Type: image/gif');
imagegif($image);
imagegif($image, __DIR__ . '/example.gif');
```
## imagegrabscreen
```php
$image = imagegrabscreen();
header('Content-Type: image/png');
imagepng($image);
```
## imageinterlace
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
var_dump(imageinterlace($image)); // int(0)
var_dump(imageinterlace($image, 1)); // int(1)
var_dump(imageinterlace($image, 0)); // int(0)
```
## imageistruecolor
```php
$image = imagecreate(100, 100);
var_dump(imageistruecolor($image)); // bool(false)
$image = imagecreatetruecolor(100, 100);
var_dump(imageistruecolor($image)); // bool(true)
```
## imagejpeg
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
header('Content-Type: image/jpg');
imagejpeg($image);
imagejpeg($image, __DIR__ . '/example.jpg');
```
## imagelayereffect
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
imagelayereffect($image, IMG_EFFECT_REPLACE);
header('Content-Type: image/jpg');
imagejpeg($image);
```
## imageline
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imageline($image, 0, 0, 100, 100, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imageloadfont
```php
var_dump(imageloadfont('04b.gdf'));
```
## imageopenpolygon
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imageopenpolygon($image, [0, 0, 20, 30, 40, 50], 3, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagepalettecopy
```php
$foo = imagecreate(100, 100);
imagecolorallocate($foo, 255, 255, 255);
$red = imagecolorallocate($foo, 255, 0, 0);
$bar = imagecreate(100, 100);
imagepalettecopy($bar, $foo);
```
## imagepalettetotruecolor
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
$red = imagecolorallocate($image, 255, 0, 0);
var_dump(imagepalettetotruecolor($image)); // bool(true)
```
## imagepng
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
header('Content-Type: image/png');
imagepng($image);
imagepng($image, __DIR__ . '/example.png');
```
## imagepolygon
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagepolygon($image, [20, 30, 50, 10, 80, 30, 70, 85, 30, 85], 5, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagerectangle
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagerectangle($image, 20, 20, 80, 80, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imageresolution
```php
$image = imagecreate(100, 100);
var_dump(imageresolution($image));
imageresolution($image, 200);
var_dump(imageresolution($image)); // array(2) { [0]=> int(200) [1]=> int(200) }
imageresolution($image, 50, 100);
var_dump(imageresolution($image)); // array(2) { [0]=> int(50) [1]=> int(100) }
```
## imagerotate
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
$image = imagerotate($image, -90, 0);
header('Content-Type: image/jpg');
imagejpeg($image);
```
## imagesavealpha
```php
$image = imagecreatefrompng(__DIR__ . '/example.png');
var_dump(imagesavealpha($image, false)); // bool(true)
var_dump(imagesavealpha($image, true)); // bool(true)
```
## imagescale
```php
$image = imagecreatefromjpeg(__DIR__ . '/example.jpg');
$image = imagescale($image, 100, 100);
header('Content-Type: image/jpg');
imagejpeg($image);
```
## imagesetbrush
```php
$foo = imagecreate(100, 100);
$bar = imagecreatetruecolor(100, 100);
imagefill($bar, 0, 0, imagecolorallocate($bar, 255, 0, 0));
var_dump(imagesetbrush($foo, $bar)); // bool(true)
```
## imagesetclip
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagesetclip($image, 20, 20, 80, 80);
imageline($image, 0, 0, 100, 100, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagesetinterpolation
```php
$image = imagecreate(100, 100);
var_dump(imagesetinterpolation($image, IMG_MITCHELL)); // bool(true)
```
## imagesetpixel
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagesetpixel($image, 10, 10, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagesetstyle
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
$red = imagecolorallocate($image, 255, 0, 0);
$green = imagecolorallocate($image, 0, 255, 0);
imagesetstyle($image, [$red, $red, $red, $green, $green, $green]);
imageline($image, 0, 0, 100, 100, IMG_COLOR_STYLED);
header('Content-Type: image/png');
imagepng($image);
```
## imagesetthickness
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagesetthickness($image, 5);
imageline($image, 0, 0, 100, 100, imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagesettile
```php
$foo = imagecreate(100, 100);
$bar = imagecreate(100, 100);
var_dump(imagesettile($foo, $bar)); // bool(true)
```
## imagestring
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagestring($image, 5, 0, 0, 'foo', imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagestringup
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagestringup($image, 5, 0, 100, 'foo', imagecolorallocate($image, 0, 0, 0));
header('Content-Type: image/png');
imagepng($image);
```
## imagesx
```php
var_dump(imagesx(imagecreate(100, 100))); // int(100)
```
## imagesy
```php
var_dump(imagesy(imagecreate(100, 100))); // int(100)
```
## imagetruecolortopalette
```php
$image = imagecreatetruecolor(100, 100);
imagefilledrectangle($image, 0, 0, 100, 100, imagecolorallocate($image, 255, 255, 255));
imagetruecolortopalette($image, false, 255);
header('Content-Type: image/png');
imagepng($image);
```
## imagettfbbox
```php
var_dump(imagettfbbox(20, 0, 'Arial.ttf', 'foo'));
```
## imagettftext
```php
$image = imagecreatetruecolor(100, 100);
imagefilledrectangle($image, 0, 0, 100, 100, imagecolorallocate($image, 255, 255, 255));
imagettftext($image, 20, 0, 20, 50, imagecolorallocate($image, 0, 0, 0), 'Arial.ttf', 'foo');
header('Content-Type: image/png');
imagepng($image);
```
## imagetypes
```php
var_dump(imagetypes());
```
## imagewbmp
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagewbmp($image, __DIR__ . '/example.wbmp');
```
## imagewebp
```php
$image = imagecreatetruecolor(100, 100);
imagecolorallocate($image, 255, 255, 255);
header('Content-Type: image/webp');
imagewebp($image);
imagewebp($image, __DIR__ . '/example.webp');
```
## imagexbm
```php
$image = imagecreate(100, 100);
imagecolorallocate($image, 255, 255, 255);
imagexbm($image, __DIR__ . '/example.xbm');
```