我正试图通过一个函数生成一个多维数组，该函数接收两个变量（$a和$b），并应返回一个多维阵列，其中$a和$b决定多维阵列的宽度和高度。我做错了什么，但我不知道是什么。提前感谢answe
<?php
$map = array();
print_r($map);
function mapGenerator($a, $b) {
$hex = '<div class="hex"><div class="top"></div><div class="middle"></div><div class="bottom"></div></div>';
$hexEven = '<div class="row even">';
$hexOdd = '<div class="row">';
$rowEnd = '</div><!-- END ROW -->';
for ($row = 0; $row < $b; ++$row) {
if ($row % 2 == 0) {
$map[$row][0] = "$hexEven";
} else {
$map[$row][0] = "$hexOdd";
}
for ($cell = 0; $cell <= $a; ++$cell) {
$map[$row][$cell] = "$hex";
}
++$cell;
$map[$row][$cell] = "$rowEnd";
}
return $map;
}
mapGenerator(4,7);
echo "<br>";
print_r($map);
?>
最终结果应该是这样的：
$map = array(
array("$hexOdd","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$rowEnd"),
array("$hexEven","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$rowEnd"),
array("$hexOdd","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$rowEnd"),
array("$hexEven","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$rowEnd"),
array("$hexOdd","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$rowEnd"),
array("$hexEven","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$rowEnd"),
array("$hexOdd","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$rowEnd"),
array("$hexEven","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$hex","$rowEnd"),
);
您的代码中有一些错误：
（旁注：由于您为数组元素分配了html标签，右键单击->查看源代码即可查看您的数组）
$map = array();
print_r($map);
function mapGenerator($a, $b) {
$hex = '<div class="hex"><div class="top"></div><div class="middle"></div><div class="bottom"></div></div>';
$hexEven = '<div class="row even">';
$hexOdd = '<div class="row">';
$rowEnd = '</div><!-- END ROW -->';
for ($row = 0; $row < $a*2; ++$row) {
//^^^^ Use $a and multiple it with 2 if you want 8 innerArrays with your current function call
if ($row % 2 == 0) {
$map[$row][0] = "$hexOdd";
//^^^^^^^ Switched the variables
} else {
$map[$row][0] = "$hexEven";
}
for ($cell = 1; $cell <= $b*2-1; ++$cell) {
//^ ^^^^^^ Use $b and multiple it with 2 minus 1 if you want 13 array elements with your current function call
//| Begin with 1 since 0 already has a value
$map[$row][$cell] = "$hex";
}
//removed unnecessary increment of $cell
$map[$row][$cell] = "$rowEnd";
}
return $map;
}
$map = mapGenerator(4,7);
//^ Don't forget to assign the function call
echo "<br>";
print_r($map);
您只需要使用两个for循环，一个创建"行"，另一个在"行"内创建"列"。像这样的东西可以做到：
$array = array();
$size = 10;
$filler = "VALUE";
for ($i = 0; $i < $size; $i++) {
// Create "rows"
$array[$i] = array();
for ($j = 0; $j < $size; $j++) {
// Add "columns" to the "rows"
$array[$i][$j] = $filler;
}
}
function mapGenerator($a, $b) {
global $map; /* add this or just define $map=array(); inside the function (better) */
$hex = '<div class="hex"><div class="top"></div><div class="middle"></div><div class="bottom"></div></div>';
$hexEven = '<div class="row even">';
$hexOdd = '<div class="row">';
$rowEnd = '</div><!-- END ROW -->';
for ($row = 0; $row < $b; $row++) { /* Inverted ++$row with $row++ */
$map[$row] = array(); /* Add this line */
if ($row % 2 == 0) {
$map[$row][0] = "$hexEven";
} else {
$map[$row][0] = "$hexOdd";
}
for ($cell = 0; $cell <= $a; $cell++) { /* Inverted ++$cell with $cell++ */
$map[$row][$cell] = "$hex";
}
$cell++;
$map[$row][$cell] = "$rowEnd";
}
return $map;
}