This article mainly introduces the background, process and solution of checking the current variable type in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.
Solution background
Tossing process one:
Solution The json_decode of json in PHP does not work. During any output
, you need to understand one thing:
The code is as follows:
PHP: curl_exec – Manual
What is the type of the variable $respJson returned by curl_exec? string type.
Tossing process two:
1. Search:
The code is as follows:
php check variable type
Reference:
PHP: gettype – Manual PHP: is_string – Manual PHP: is_int – Manual
So try it:
The code is as follows:
$respJson = $crifanLib->getUrlRespHtml($getTokenUrl); $crifanLib->logWrite("respJson=%s", $respJson); echo gettype($respJson); echo is_string($respJson); echo "before decodedJsonObj"; $decodedJsonObj = json_decode($respJson);
Result:
Still no output. . .
2. Try:
Copy code The code is as follows:
echo gettype($ respJson);
echo is_string($respJson);
Result:
The code is as follows:
输出:string1
Then prove that here The type of the variable is indeed string.
Summary
The variable type obtained in PHP is gettype($var);
To determine whether it is a certain type alone, you can use:
The code is as follows:
is_int is_string 等等。
Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.
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