Convert java timestamp to php timestamp

How to convert java timestamp to php timestamp: first convert the java timestamp into a string, the code is [$utStr = $javaUt . '';]; then if the java timestamp is less than or equal to 10 digits, directly Return; finally intercept and convert it into an integer.

How to convert java timestamp to php timestamp:

1. Convert to string first

$utStr = $javaUt . '';
$utLen = strlen($utStr);

2. The timestamp of java is 13 digits. If it is less than or equal to 10 digits, it will be returned directly.

if ($utLen <= 10) {
    return $javaUt;
   }

3. Intercept and convert it into an integer

return intval(substr($utStr, 0, $utLen - 3));

The complete code is as follows:

/**
     * java时间戳转php时间戳
     * @param int $javaUt java的时间戳
     * @return int
     * @Date 2019/8/26
     */
    public static function javaUt2PhpUt($javaUt)
    {
        if (!($javaUt && $javaUt > 0)) {
            return $javaUt;
        }
        // 先转成字符串
        $utStr = $javaUt . '';
        $utLen = strlen($utStr);
        // java的时间戳是13位 小于等于10位的直接返回
        if ($utLen <= 10) {
            return $javaUt;
        }
        // 截取并且转成整型
        return intval(substr($utStr, 0, $utLen - 3));
    }

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