About the WeChat interface exception, the reason for verification failure [recent: 2.28 days later]

This is the signature verification function of the official sample: privatefunctioncheckSignature () {$ signature =$ _ GET [& quot; signature & quot;];

This is the signature verification function of the official sample:

private function checkSignature(){        $signature = $_GET["signature"];        $timestamp = $_GET["timestamp"];        $nonce = $_GET["nonce"];        $token = TOKEN;$tmpArr = array($token, $timestamp, $nonce);sort($tmpArr);$tmpStr = implode( $tmpArr );$tmpStr = sha1( $tmpStr );if( $tmpStr == $signature ){return true;}else{return false;}}

The reason is as follows:

 '74ea873b074a61f316a3ab6e78787787 ', 'timestamp' => '000000', 'nonce' => '000000'); sort ($ arr ); // sort print_r ($ arr) in the official demo; // Array ([0] => 963820356 [1] => 1393812476 [2] => 74ea873b074a61f397a3ab6e787787) sort ($ arr, SORT_STRING); // correct string-type sorting print_r ($ arr); // Array ([0] => 1393812476 [1] => 74ea873b074a61f397a3ab6e787787 [2] => 963820356)

Description of the sort function:
It sorts arrays, which has been explicitly stated in the manual:
If the sorting type is determined, the sort function provides the second function to specify the sorting type:

• SORT_REGULAR-normal comparison unit (without changing the type)
• SORT_NUMERIC-the unit is compared as a number.
• SORT_STRING-the unit is compared as a string
• SORT_LOCALE_STRING-compare the unit as a string based on the current region (locale) settings