PHP to view the current variable type, php to view the current variable

PHP to view the current variable type, php to view the current variable

The following describes the background, process, and solution for PHP to view the current variable type. The details are as follows:

Background

Tossing process 1:

Solved json json_decode in PHP and no output

During this period, you need to understand one:

Copy codeThe Code is as follows:
PHP: curl_exec-Manual

The variable $ respJson returned by curl_exec is of the string type.

Tossing process 2:

1. Search:

Copy codeThe Code is as follows:
Php check variable type

Refer:

PHP: gettype-Manual

PHP: is_string-Manual

PHP: is_int-Manual

So try:

Copy codeThe 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 codeThe Code is as follows:
Echo gettype ($ respJson );
Echo is_string ($ respJson );

Result:

Copy codeThe Code is as follows:
Output: string1

It proves that the type of the variable here is indeed string.

Summary

The variable type obtained in PHP is gettype ($ var );

It is determined to be of a specific type. You can use:

Copy codeThe Code is as follows:
Is_int
Is_string

And so on.

The above is the method for viewing the current variable type in PHP. I hope you will like it.