如何在PHP中检测JSON对象是String还是数组？ [重复]
问题描述：
This question already has an answer here:
When I have an input like below...
{
"number":[
"+39XXXXXXXX",
"+34XXXXXXXX",
"+49XXXXXXXX"
],
"message":"Sample msg..."
}
I handle it with a foreach loop—like so:
foreach ($message->number as $key => $number) {
...
}
However when I have an input like this:
{
"number": "+49XXXXXXXX",
"message": "Sample msg..."
}
I receive an error, cause there is no array to be looped inside the object.
So what is a good and efficient way to detect for this?
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此问题已经存在 这里有一个答案： p>
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如何检查变量是否为数组？...或类似数组的内容
6 answers
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当我有一个 输入如下... p>
{ “number”：[ “+ 39XXXXXXXX”， “+ 34XXXXXXXX”， “+ 49XXXXXXXX” ]， “消息”：“示例消息...” } code> pre>我使用
foreach code>循环处理它 - 像这样： p>foreach（$ message-＆gt; number as $ key =＆gt; $ number）{ ... } code>
但是当我有一个输入时 这个： p>
{ “number”：“+ 49XXXXXXXX”， “message”：“Sample msg ...” } code> pre>我收到一个错误，因为没有数组在对象内循环。 p>
那么什么是好的有效方式 检测到这个？ strong> p> div>
答
You can check if the var value is array using the is_array function:
if (is_array($message->number) {
foreach ($message->number as $key => $number) {
...
}
} else {
...
}