从数组返回单个变量
我正在使用以下脚本：
http://www.micahcarrick .com/php-zip-code-range-and-distance-calculation.html
要获取邮政编码的详细信息，我使用以下命令：
$selected = $z->get_zip_details($zip);
$result = implode(",", $selected);
echo $result;
这将返回“$zip”的所有详细信息：
32.9116,-96.7323 ,Dallas,Dallas,TX,Texas,214,Central
任何1都可以帮助我使脚本仅返回城市变量吗？该脚本的常见问题解答如下：
get_zip_details($zip)
Returns the details about the zip code: $zip. Details are in the form of a keyed array. The keys are: latitude, longitude, city, county, state_prefix, state_name, area_code, and time_zone. All are pretty self-explanitory. Returns false on error.
不幸的是，我无法弄清楚如何获取单个值（城市）。将不胜感激任何帮助！
谢谢！
i am using following script:
http://www.micahcarrick.com/php-zip-code-range-and-distance-calculation.html
To get the details for a ZIP code, I am using this:
$selected = $z->get_zip_details($zip);
$result = implode(",", $selected);
echo $result;
This returns all details of "$zip" :
32.9116,-96.7323,Dallas,Dallas,TX,Texas,214,Central
Could any1 help me to make the script return ONLY the city variable? The FAQ of the script, says the following:
get_zip_details($zip)
Returns the details about the zip code: $zip. Details are in the form of a keyed array. The keys are: latitude, longitude, city, county, state_prefix, state_name, area_code, and time_zone. All are pretty self-explanitory. Returns false on error.
Unfortunately I cant figure out how to get a single value (city). Would appreciate any help!
Thanks!
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这些函数返回一个数组，因此我们必须将其存储在变量中。
接下来，我们可以选择指向城市的键。钥匙也称为城市。
The functions is returning an array, so we have to store it in a variable.
Next, we can select the key which points to the city. The key is also called city.
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为了将来参考，
implode()explode()等都是数组函数。因此，如果您在某些东西上使用它们，那么您可以print_r()它来查看其结构。如果您执行了
print_r($selected);或var_dump($selected);，您将得到类似这样的输出：数组以了解如何访问各个值。
For future reference,
implode()explode()etc. are array functions. So, if you're using them on something then you canprint_r()it to see its structure.If you had done
print_r($selected);orvar_dump($selected);, you would have gotten something like this as output:So you can see the keys of the array to know how to access the individual values.