遍历多维数组
[英]Looping through a multidimensional array
问题描述
我正在使用以下代码遍历多维数组，并找到去过某所大学的用户，在本例中为UCF。
$friends = $fqlResult;
$friends_BA = array();
foreach ($friends as $friend) {
$isBA = false;
if (is_array($friend['education'])) {
foreach ($friend['education'] as $school) {
if (isset($school)) {
foreach ($school['school'] as $name) {
if (strpos(strtolower($name['name']), 'University of Central Florida') !== false) {
$friends_BA[] = $friend['name'];
continue 3; // skip to the next friend
}
}
}
}
}
}
d($friends_BA);
多维数组看起来像这样。 以下是来自Facebook Graph API的朋友列表：
Array
(
[0] => Array
(
[name] => PERSON
[education] =>
)
[1] => Array
(
[name] => PERSON
[education] => Array
(
[0] => Array
(
[school] => Array
(
[id] => 108087985890571
[name] => St. Andrew's School
)
[year] => Array
(
[id] => 138383069535219
[name] => 2005
)
[type] => High School
)
[1] => Array
(
[school] => Array
(
[id] => 20697868961
[name] => Boston University
)
[concentration] => Array
(
[0] => Array
(
[id] => 108654845832522
[name] => Business Administration
)
)
[type] => College
)
[2] => Array
(
[school] => Array
(
[id] => 108289315859633
[name] => University of Miami
)
[year] => Array
(
[id] => 138879996141011
[name] => 2013
)
[type] => Graduate School
)
)
)
[2] => Array
(
[name] => PERSON
[education] => Array
(
[0] => Array
(
[school] => Array
(
[id] => 115444241803885
[name] => Saint Andrews High School
)
[year] => Array
(
[id] => 137616982934053
[name] => 2006
)
[type] => High School
)
[1] => Array
(
[school] => Array
(
[id] => 112033702149888
[name] => Boca Raton High
)
[year] => Array
(
[id] => 137616982934053
[name] => 2006
)
[type] => High School
)
[2] => Array
(
[school] => Array
(
[id] => 108087985890571
[name] => St. Andrew's School
)
[type] => High School
)
[3] => Array
(
[school] => Array
(
[id] => 107573562605861
[name] => Duke University
)
[concentration] => Array
(
[0] => Array
(
[id] => 104045469631213
[name] => Political science
)
)
[type] => College
)
)
)
[3] => Array
(
[name] => PERSON
[education] =>
)
[4] => Array
(
[name] => PERSON
[education] => Array
(
[0] => Array
(
[school] => Array
(
[id] => 106039752760627
[name] => Berwick Academy
)
[year] => Array
(
[id] => 137616982934053
[name] => 2006
)
[type] => High School
)
[1] => Array
(
[school] => Array
(
[id] => 108087985890571
[name] => St. Andrew's School
)
[type] => High School
)
[2] => Array
(
[school] => Array
(
[id] => 105690226130720
[name] => Northeastern University
)
[concentration] => Array
(
[0] => Array
(
[id] => 108654845832522
[name] => Business Administration
)
)
[type] => College
[classes] => Array
(
[0] => Array
(
[id] => 189873264368867
[name] => 2011
)
)
)
)
)
我运行了一个类似的程序来查找确实有效的某些主题的用户专业，但是由于某些原因，上面的代码不起作用。 这是可行的：
$friends = $fqlResult;
$friends_BA = array();
foreach ($friends as $friend) {
$isBA = false;
if (is_array($friend['education'])) {
foreach ($friend['education'] as $school) {
if (isset($school['concentration'])) {
foreach ($school['concentration'] as $concentration) {
if (strpos(strtolower($concentration['name']), 'business') !== false) {
$friends_BA[] = $friend['name'];
continue 3; // skip to the next friend
}
}
}
}
}
}
d($friends_BA);
一如既往，任何帮助将由衷的感谢。 节日快乐！
更新
任何人都想刺这东西吗？
$friends = $fqlResult;
$friends_BA = array();
foreach ($friends as $friend) {
$isBA = false;
if (is_array($friend['current_location'])) {
foreach ($friend['current_location'] as $location) {
if (isset($location)) {
foreach ($location['city'] as $city) {
$lowerName = strtolower($city);
if (strpos($lowerName, 'orlando') !== false || strpos($lowerName, 'gainesville') !== false) {
$friends_BA[] = $friend['name'];
continue 3; // skip to the next friend
}
}
}
}
}
}
d($friends_BA);
该数组如下所示：
Array
(
[0] => Array
(
[name] => PERSONS NAME
[current_location] => Array
(
[city] => New York
[state] => New York
[country] => United States
[zip] =>
[id] => 108424279189115
[name] => New York, New York
)
)
[1] => Array
(
[name] => PERSONS NAME
[current_location] =>
)
[2] => Array
(
[name] => PERSONS NAME
[current_location] =>
)
[3] => Array
(
[name] => PERSONS NAME
[current_location] =>
)
[4] => Array
(
[name] => PERSONS NAME
[current_location] => Array
(
[city] => San Jose
[state] => California
[country] => United States
[zip] =>
[id] => 111948542155151
[name] => San Jose, California
)
)
[5] => Array
(
[name] => PERSONS NAME
[current_location] => Array
(
[city] => Boston
[state] => Massachusetts
[country] => United States
[zip] =>
[id] => 106003956105810
[name] => Boston, Massachusetts
)
)
已经玩了一个小时，但似乎无法正常工作。 我在第二个foreach语句上得到了无效的参数。
3 个解决方案
解决方案1
1 已采纳 2011-12-19 20:39:12
您的问题是区分大小写。 您在字符串上使用strtolower检查大学，但是，您发布的大学字符串大小写混合。 将其更改为此行，它应该可以工作：
if (strpos(strtolower($name['name']), 'university of central florida') !== false) {
如果您希望大小写匹配，请删除strtolower ，重新添加大写字母，并且它也应匹配大小写。
更新
问题的第二部分是$name['name']应该只是$name 。 由于您是直接访问学校数组，因此它将遍历该部分。
if (strpos(strtolower($name), 'university of central florida') !== false) {
那应该做。 因此，基本上foreach遍历了school数组，因此名称以字符串值的形式出现，而不是数组的一部分。
更新2
$lowerName = strtolower($name);
if (strpos($lowerName, 'university of central florida') !== false
|| strpos($lowerName, 'ucf') !== false) {
解决方案2
0 2011-12-19 20:00:36
尝试将这两个函数一起遍历整个数组。
它们是完全动态的，将遍历任何复杂性的多维数组 。
我用它来回显所有维为1，您可能会用它来检查key => value对，并检查它是否为您要寻找的维。
function workwitharrays($v) {
if (is_array($v)) {
foreach ($v as $key => $value) {
if (is_array($value)) {
workwitharrays($value);
} elseif (!is_array($value)) {
echo "<tr><td>{$key}</td><td>{$value}</td></tr>";
}
}
}
}
function array_get_key_val($firstarray) {
if (is_array($firstarray)) {
foreach ($firstarray as $k => $v) {
if (is_array($v)) {
workwitharrays($v);
} elseif (!is_array($v)) {
echo "<tr><td>{$k}</td><td>{$v}</td></tr>";
}
}
}
}
echo "<table><tbody>";
array_get_key_val($ArrayMultidim);
echo "</tbody></table";
解决方案3
-1 2011-12-19 20:08:27
您能详细说明“没有工作”的意思吗？ 如果您的测试数据正确，则不应将任何内容添加到$ friends_BA []数组中，因为这些人都没有上过“中央佛罗里达大学”。
您遇到错误了吗？ 您可能要去除值中的撇号。 如果if陈述试图这样做，圣安德鲁可能会引起问题
If('St. Andrew's' == 'University of Central Florida')
这应该导致错误。
循环通过多维数组
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