Examples: EA070 aBX32gTf APPROACH 1: Brute Force The first approach is the simplest one to understand and thus brute force. Get the Pro version on CodeCanyon. For example, when you upload an image to imgur, it generates a random 5-letter [a-zA-Z] string. Something can be done or not a fit? Random string generation with upper case letters and digits. rev2022.12.11.43106. Return Values As per the PHP docs "If offset is negative, the returned string will start at the offset'th . This function will now return 10 times the length of the returned value from Step 1 which is composed of 730 characters. A sequence of characters is called as string. Generate a random, unique, alpha-numeric string using PHP. Courses. Also what characters can you have in the string? Returns < 0 if str1 is less than str2, > 0 if str1 is greater than str2, and 0 if they are equal. Compares two strings. It was the first pseudo-random number generator. It is fast, efficient and provides high-quality integers. It also does not support magic methods and does not implement any interfaces.