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May
11thPHP: How to Generate a Random String Containing Both Letters and Numbers
To generate a string containing a random selection of both letters and numbers (i.e. an alphanumeric string) using PHP is pretty trivial. Essentially what we want to do is define a string containing all the characters we wish to use in the generated string. Then randomly select characters from the string and glue them all together until we get a random string of the desired length. Coded as a function, you get: Pretty simple, but quite useful actually.
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Nov
26thPHP: Strip Non-Alphanumeric Characters out of a String
Sometimes it comes in quite handy to strip out all the non-alphanumeric characters from a given string. Of course, we could just use a bog standard preg_replace with a valid regex to achieve this, though the result of doing this might result in a non-readable resulting string.
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May
7thPHP: How to Get all the Numbers out of an Alphanumeric String?
Given a registration code, or something important like that, which often contains information encoded in the alphanumeric string itself, it is sometimes quite useful to be able to simply strip out the letters from the string, leaving only the numeric part behind.
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Apr
21stPHP: How to Get all the Letters out of an Alphanumeric String?Given a registration code, or something important like that, which often contains information encoded in the alphanumeric string itself, it is sometimes quite useful to be able to simply strip out the numbers from the string, leaving only the letters behind.
