我正在尝试解析 wp_postmeta
表中的 WordPress meta_value
列。
meta_value
行内容采用序列化格式,如下所示:
a:1:{i:0;O:8:"stdClass":2:{s:5:"notes";s:0:"";s:12:"applications";a:5:
{s:4:"Year";O:8:"stdClass":2:
{s:4:"name";s:4:"Year";s:5:"value";s:4:"2006";}s:4:"Make";O:8:"stdClass":2:
{s:4:"name";s:4:"Make";s:5:"value";s:5:"Isuzu";}s:5:"Model";O:8:"stdClass":2:
{s:4:"name";s:5:"Model";s:5:"value";s:5:"i-280";}s:4:"Trim";O:8:"stdClass":2:
{s:4:"name";s:4:"Trim";s:5:"value";s:31:"Base Extended Cab Pickup 2-Door";}s:6:"Engine";O:8:"stdClass":2:
{s:4:"name";s:6:"Engine";s:5:"value";s:54:"2.8L 2770CC 169Cu. In. l4 GAS DOHC Naturally Aspirated";}}}}
我能够使用 while 循环来反序列化数据
$results = $mysqli->query("SELECT meta_value
FROM wp_postmeta
WHERE meta_key = '_ebay_item_compatibility_list';");
while($row = $results->fetch_array()) {
echo '<pre>';
print_r(unserialize($row['meta_value']));
echo '</pre>';
}
这给了我类似的输出
Array
(
[0] => stdClass Object
(
[notes] => ONLY FITS 6 LUG VEHICLES
[applications] => Array
(
[Year] => stdClass Object
(
[name] => Year
[value] => 2008
)
[Make] => stdClass Object
(
[name] => Make
[value] => Toyota
)
[Model] => stdClass Object
(
[name] => Model
[value] => Tacoma
)
[Trim] => stdClass Object
(
[name] => Trim
[value] => Base Crew Cab Pickup 4-Door
)
[Engine] => stdClass Object
(
[name] => Engine
[value] => 2.7L 2694CC l4 GAS DOHC Naturally Aspirated
)
)
)
[1] => stdClass Object
(
[notes] => ONLY FITS 6 LUG VEHICLES
[applications] => Array
(
[Year] => stdClass Object
(
[name] => Year
[value] => 2008
)
[Make] => stdClass Object
(
[name] => Make
[value] => Toyota
)
[Model] => stdClass Object
(
[name] => Model
[value] => Tacoma
)
[Trim] => stdClass Object
(
[name] => Trim
[value] => Base Crew Cab Pickup 4-Door
)
[Engine] => stdClass Object
(
[name] => Engine
[value] => 4.0L 3956CC 241Cu. In. V6 GAS DOHC Naturally Aspirated
)
)
)
我想做的是访问所有value
元素。
含义类似于 $year = ['Year']['value'];
、 $make = ['Make']['value'];
等.
如何在 while 循环中访问这些 value
元素?
最佳答案
您有 stdClass 对象和数组的组合,因此对于数组,您通常使用 [] 和对象的属性 ->
示例:
while($row = $results->fetch_array()) {
$foo = unserialize($row['meta_value']);
$foo[0]->applications['Make']->value;
}
编辑: 如果一行中有更多数组元素,可以使用 foreach
while($row = $results->fetch_array()) {
$foo = unserialize($row['meta_value']);
foreach ( $foo as $f) {
foreach ( $f->applications as $application) {
echo $application->value;
}
}
}
关于php - 在mysql while循环中解析序列化数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43768318/