Как сгенерировать GIF заданного размера из строки?

Question

[winbackgo]

Имеется функция которая генерирует 1x1 px gif. Надо изменить ее так чтобы можно было задавать размер. Не могу понять из спецификации, где указывать размеры.

function gifStr($r = 0, $g = 0, $b = 0, $transparent = true) 
{
	return pack('C*',
		71, 73, 70, 56, 57, 97, // "GIF89a"

		// Logical screen descriptor
		1, 0, // logical screen width
		1, 0, // logical screen height
		128, // global color table | color resolution(3) | sort flag | size of global color table (3)
		0, // background color index
		0, // pixel aspect ratio
		$r, $g, $b, 0, 0, 0, // global color table

		// Graphic control extension
		0x21, // extension introducer
		0xF9, // graphic control label
		4, // block size
		1, // disposal method(3) | user input(3) | transparency |
		0, 0, // delay time
		$transparent ? 0 : 1, // transparent color index
		0, // block terminator

		// Image descriptor
		0x2C, // image seperator
		0, 0, // image left position
		0, 0, // image top position
		1, 0, // image height
		1, 0, // image width
		0, // local color | interlaced | ordered | reserved(2) | size of color table (3)

		2, 2, 68, 1, 0, // image data

		59); // gif trailer
}

А надо

function gifStr($width = 1, $height = 1, $r = 0, $g = 0, $b = 0, $transparent = true)  {...}

Есть задача генерировать 1000 гифок на лету, 1 пиксельная гифка генерируется в ~1000 раз быстрее чем imagecreate > imagegif (0.00292 sec. против 1.75561 sec. imagegif для тысячи гифок)

Answer 1

[Илья Плотников]

1, 0, // logical screen width
1, 0, // logical screen height

Comments

[winbackgo]

Это не все. 99x65

[1] => 71
    [2] => 73
    [3] => 70
    [4] => 56
    [5] => 55
    [6] => 97
    [7] => 99
    [8] => 0
    [9] => 65
    [10] => 0
    [11] => 128
    [12] => 0
    [13] => 0
    [14] => 4
    [15] => 34
    [16] => 132
    [17] => 0
    [18] => 0
    [19] => 0
    [20] => 44
    [21] => 0
    [22] => 0
    [23] => 0
    [24] => 0
    [25] => 99
    [26] => 0
    [27] => 65
    [28] => 0
    [29] => 0
    [30] => 2
    [31] => 88
    [32] => 132
    [33] => 143
    [34] => 169
    [35] => 203
    [36] => 237
    [37] => 15
    [38] => 163
    [39] => 156
    [40] => 180
    [41] => 218
    [42] => 139
    [43] => 179
    [44] => 222
    [45] => 188
    [46] => 251
    [47] => 15
    [48] => 134
    [49] => 226
    [50] => 72
    [51] => 150
    [52] => 230
    [53] => 137
    [54] => 166
    [55] => 234
    [56] => 202
    [57] => 182
    [58] => 238
    [59] => 11
    [60] => 199
    [61] => 242
    [62] => 76
    [63] => 215
    [64] => 246
    [65] => 141
    [66] => 231
    [67] => 250
    [68] => 206
    [69] => 247
    [70] => 254
    [71] => 15
    [72] => 12
    [73] => 10
    [74] => 135
    [75] => 196
    [76] => 162
    [77] => 241
    [78] => 136
    [79] => 76
    [80] => 42
    [81] => 151
    [82] => 204
    [83] => 166
    [84] => 243
    [85] => 9
    [86] => 141
    [87] => 74
    [88] => 167
    [89] => 212
    [90] => 170
    [91] => 245
    [92] => 138
    [93] => 205
    [94] => 106
    [95] => 183
    [96] => 220
    [97] => 174
    [98] => 247
    [99] => 11
    [100] => 14
    [101] => 139
    [102] => 199
    [103] => 228
    [104] => 178
    [105] => 249
    [106] => 140
    [107] => 78
    [108] => 171
    [109] => 215
    [110] => 236
    [111] => 182
    [112] => 251
    [113] => 13
    [114] => 143
    [115] => 203
    [116] => 231
    [117] => 244
    [118] => 119
    [119] => 1
    [120] => 0
    [121] => 59

1x1

[1] => 71
    [2] => 73
    [3] => 70
    [4] => 56
    [5] => 55
    [6] => 97
    [7] => 1
    [8] => 0
    [9] => 1
    [10] => 0
    [11] => 128
    [12] => 0
    [13] => 0
    [14] => 4
    [15] => 34
    [16] => 132
    [17] => 0
    [18] => 0
    [19] => 0
    [20] => 44
    [21] => 0
    [22] => 0
    [23] => 0
    [24] => 0
    [25] => 1
    [26] => 0
    [27] => 1
    [28] => 0
    [29] => 0
    [30] => 2
    [31] => 2
    [32] => 68
    [33] => 1
    [34] => 0
    [35] => 59