很抱歉,我实际上正在尝试调试此代码justpaste.it/fh8,因为我无法让它工作。所以我怀疑它与数组
有关我有这个数组$ compare_colours [' red']。当我var_dump时,它会给出这个值:
int(255)int(252)int(255)int(255)int(255)int(164)int(116)int(194)int(255)int(100)int(0)int(0 )int(1)
现在我如何手动获取第一个或第二个值?所以第一个值是255,第二个值是252。
我尝试使用$ compare_colours [' red'] [0],$ compare_colours 'red',但只获得空值。
感谢。
我从这段代码中获得了$ compare_colours数组
$compare_colors = imagecolorsforindex($compare_pic, $compare_rgb);
这是来自$ compare_colours
的print_rArray ( [red] => 255 [green] => 255 [blue] => 255 [alpha] => 127 )
Array ( [red] => 252 [green] => 252 [blue] => 252 [alpha] => 126 )
Array ( [red] => 255 [green] => 255 [blue] => 255 [alpha] => 127 )
Array ( [red] => 255 [green] => 255 [blue] => 255 [alpha] => 127 )
Array ( [red] => 255 [green] => 255 [blue] => 255 [alpha] => 127 )
Array ( [red] => 164 [green] => 218 [blue] => 148 [alpha] => 44 )
Array ( [red] => 116 [green] => 202 [blue] => 115 [alpha] => 21 )
Array ( [red] => 194 [green] => 230 [blue] => 182 [alpha] => 64 )
Array ( [red] => 255 [green] => 255 [blue] => 255 [alpha] => 127 )
Array ( [red] => 100 [green] => 100 [blue] => 100 [alpha] => 50 )
Array ( [red] => 0 [green] => 0 [blue] => 0 [alpha] => 0 )
Array ( [red] => 0 [green] => 0 [blue] => 0 [alpha] => 0 )
当我使用var_dump($ compare_colors);
时array(4) { ["red"]=> int(255) ["green"]=> int(255) ["blue"]=> int(255) ["alpha"]=> int(127) }
array(4) { ["red"]=> int(252) ["green"]=> int(252) ["blue"]=> int(252) ["alpha"]=> int(126) }
array(4) { ["red"]=> int(255) ["green"]=> int(255) ["blue"]=> int(255) ["alpha"]=> int(127) }
array(4) { ["red"]=> int(255) ["green"]=> int(255) ["blue"]=> int(255) ["alpha"]=> int(127) }
array(4) { ["red"]=> int(255) ["green"]=> int(255) ["blue"]=> int(255) ["alpha"]=> int(127) }
array(4) { ["red"]=> int(164) ["green"]=> int(218) ["blue"]=> int(148) ["alpha"]=> int(44) }
array(4) { ["red"]=> int(116) ["green"]=> int(202) ["blue"]=> int(115) ["alpha"]=> int(21) }
array(4) { ["red"]=> int(194) ["green"]=> int(230) ["blue"]=> int(182) ["alpha"]=> int(64) }
array(4) { ["red"]=> int(255) ["green"]=> int(255) ["blue"]=> int(255) ["alpha"]=> int(127) }
array(4) { ["red"]=> int(100) ["green"]=> int(100) ["blue"]=> int(100) ["alpha"]=> int(50) }
array(4) { ["red"]=> int(0) ["green"]=> int(0) ["blue"]=> int(0) ["alpha"]=> int(0) }
array(4) { ["red"]=> int(0) ["green"]=> int(0) ["blue"]=> int(0) ["alpha"]=> int(0) }
答案 0 :(得分:0)
如果$ compare_colours是颜色数组,那么你应该反过来这样做:
echo $compare_colours[0]['red'].' '.$compare_colours[1]['red'];
答案 1 :(得分:0)
尝试通过以下代码获得任何输出。
echo $compare_colours[0]['red'];
或echo $compare_colors['red'];
答案 2 :(得分:-2)
你可以参加一个foreach循环:
$index = 0;
foreach ($compare_colours['red'] as $k => $v) {
if ($index == 0) {
$first_value = $v;
}
if ($index == 1) {
$second_value = $v;
break;
}
$index = $index + 1;
}
也许有一个更聪明的事情,但这很快,因为你只循环2次。