我终生无法从数据库返回多维数组的单个值。例如，我想返回每个键的值以在表列中返回。
这是来自数据库的数组：
Array
(
[0] => stdClass Object
(
[student_id] => lvzr0001
[fname] => Hamza
[lname] => ibrahimi
[student_email] => [email protected]
[course] => CPAN 220 D30
[full_name] => asdfddd
[institution] => asdf
[position] => sadf
[proc_email] => [email protected]
[phone] => 14168334599
[address] => 20 edgecliffe golfway
[city] => Toronto
[prov_state] => Ont
[postal_code] => M3C 3A4
[country] => Canada
[comments] => adfadsfasdfasdfas
)
[1] => stdClass Object
(
[student_id] => 56gfdsgdfs
[fname] => zxcv
[lname] => cvcvz
[student_email] => [email protected]
[course] => ELIC 101 90
[full_name] => dfa
[institution] => asdf
[position] => zxcvzxcv
[proc_email] => [email protected]
[phone] => 4002452345
[address] => 102 yorkland st
[city] => Richmond Hill
[prov_state] => Ont
[postal_code] => l4s1a1
[country] => Canada
[comments] => xzcvzxcv
)
)
我想要这样的特定列结果：
<?php
global $wpdb;
$displayQuery = $wpdb->get_results("SELECT * FROM viewoffcampusproctorrequests");
echo '<pre>';
print_r ($displayQuery);
echo '</pre>';
foreach($displayQuery as $key => $value){
foreach($value as $title => $description){
echo $description['fname'];
}
}
但是我只有在获得全部键值时才可以echo $description;。我将如何访问阵列中的每个关键项目？
您接近了：$value是一个对象，因此您可以检索特定的键/值对。如果需要fname每个对象的值：
foreach($displayQuery as $key => $value){
echo $value->fname;
}
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我来说两句