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PHP common variable string checksum rules
1, check cell phone number /** * Determine whether the phone format is correct * @param $mobile */ function is_mobile($mobile) { return preg_match('/1[3456789]{1}\d{9}$/',$mobile); } /** * Verify the format of the cell phone * @param $utfstr...
PHP Simple Generation of Random Numbers, Strings
1. Generate random string /** * Generate random string * * @param int $length Output length * @param string $chars Optional , default is 0123456789 * @return string string */ function random( $length, $chars ...
Commonly used broadband speed measurement tools
Network speed test tool provides network speed test, network quality test, broadband speed test, Wi-Fi speed test, 5G speed test, IPv6 speed test, bandwidth detection, router speed test, gateway speed test, broadband speed boost, broadband upgrade, network acceleration, intranet speed test, private network speed test, video test, game speed test...
Cell phone type access judgment
1. determine if it is mobile access ** * determine if it is mobile access * @return boolean */ function cmf_is_mobile() { if (PHP_SAPI ! = 'cli') { static $cmf_is_mobile; if (isset($cmf_is_mobile)) return $cmf...
FFmpeg common utility commands
FFmpeg is a powerful command line audio/video tool that can take care of transcoding, stream mixing, embedded subtitling, editing, and so on. Installation This section is for Windows users. Go to the compiled file (gyan.dev) of the Windows version suggested by the FFmpeg website ...
Web Third-Party Embedded Page Speed Optimization
Third-party content may affect the performance of our page in a number of ways. For example, it may block rendering, compete for network bandwidth with other resources on our page, and embedding of third-party web pages may cause the layout to shift when loading, which in turn affects our page's Core Web...
