我需要生成一个网格（+6.00在-15.00）！有人可以帮助我吗？请PHP代码。
6.005.755.505.255.00....-15.00
"实际功劳归@Mark贝克"
但在这里我只是把它放在一个好的形状，这正是你可以做到的：
<?php
$grid = range(6, -15, 0.25);
echo "<pre>";
print_r($grid);
echo "</pre>";
?>
这是代码的输出：
Array
(
[0] => 6
[1] => 5.75
[2] => 5.5
[3] => 5.25
[4] => 5
[5] => 4.75
[6] => 4.5
[7] => 4.25
[8] => 4
[9] => 3.75
[10] => 3.5
[11] => 3.25
[12] => 3
[13] => 2.75
[14] => 2.5
[15] => 2.25
[16] => 2
[17] => 1.75
[18] => 1.5
[19] => 1.25
[20] => 1
[21] => 0.75
[22] => 0.5
[23] => 0.25
[24] => 0
[25] => -0.25
[26] => -0.5
[27] => -0.75
[28] => -1
[29] => -1.25
[30] => -1.5
[31] => -1.75
[32] => -2
[33] => -2.25
[34] => -2.5
[35] => -2.75
[36] => -3
[37] => -3.25
[38] => -3.5
[39] => -3.75
[40] => -4
[41] => -4.25
[42] => -4.5
[43] => -4.75
[44] => -5
[45] => -5.25
[46] => -5.5
[47] => -5.75
[48] => -6
[49] => -6.25
[50] => -6.5
[51] => -6.75
[52] => -7
[53] => -7.25
[54] => -7.5
[55] => -7.75
[56] => -8
[57] => -8.25
[58] => -8.5
[59] => -8.75
[60] => -9
[61] => -9.25
[62] => -9.5
[63] => -9.75
[64] => -10
[65] => -10.25
[66] => -10.5
[67] => -10.75
[68] => -11
[69] => -11.25
[70] => -11.5
[71] => -11.75
[72] => -12
[73] => -12.25
[74] => -12.5
[75] => -12.75
[76] => -13
[77] => -13.25
[78] => -13.5
[79] => -13.75
[80] => -14
[81] => -14.25
[82] => -14.5
[83] => -14.75
[84] => -15
)