The first: directly use a function, is_numeric() This function is to detect whether the parameter is a number, if so, return true, if not, return false, for example: is\_numeric( 'abcd123' ) ordie('the provided parameter is not a number'); The second ...

PHP Curl Class Library

1, simple string encryption, decryption function /** * String encryption, decryption function * * * @param string $txt String * @param string $operation ENCODE for encryption, DECODE for decryption, optional parameter, default is ENCODE, * @param st...

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PHP input() to receive data (get,post, etc.)

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 PDO database library

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 ...

Powerful php file upload class

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PHP Image add image or text watermark