[英]PHP multi dimensional Array
Array
(
[a] => Array
(
[a] => Array
(
[a] => a
[b] => b
)
[b] => Array
(
[a] => a
[b] => b
)
)
[b] => Array
(
[a] => Array
(
[a] => a
[b] => b
)
[b] => Array
(
[a] => a
[b] => b
)
)
)
如何从上面的数组下面得到一个字符串?
aaa,aab,aba,abb,baa,bab,bba,bbb
您可以简单地编写一个递归函数以将键自动串联在一起。
function getKeysString($array, $prefix = '') {
$keys = array();
foreach($array as $key => $value) {
$str = $prefix.$key;
if(is_array($value)) {
$str = getKeysString($value, $str);
}
$keys[] = $str;
}
return implode(',', $keys);
}
因此,给定数组:
$arr = array (
'a' => array (
'a' => array (
'a' => null,
'b' => null
),
'b' => array (
'a' => null,
'b' => null
)
),
'b' => array (
'a' => array (
'a' => null,
'b' => null
),
'b' => array (
'a' => null,
'b' => null
)
)
);
以下内容将为您提供所需的结果:
$result = getKeysString($arr);
$str = array();
foreach($array as $key1 => $value1)
{
foreach($value1 as $key2 => $value2)
{
foreach($value2 as $key3 => $value3)
$str[]= $key1.$key2.$key3;
}
}
echo implode(',', $str);
$Student = array(array("Adam",10,10),
array("Ricky",10,11),
array("Bret",15,14),
array("Ram",14,17)
);
for($i=0;$i<=3;$i++){
for($j=0;$j<=2;$j++){
print_r($Student[$i][$j]);
echo "<br>";
}
}
<?php
$Student = array(array("Adam",10,10,10),
array("Ricky",10,11,10),
array("Bret",15,14,10),
array("Ram",14,17,10)
);
for($i=0;$i<=3;$i++){
for($j=0;$j<=3;$j++){
print_r($Student[$i][$j]);
echo "<br>";
}
}
?>
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