This PHP function tables a hexadecimal color code like “ff0000” and figures out what’s more color font text would be more readable, black or white.
Explode String by Any Whitespace
This one-liner function will turn a string into an array by its whitespace properly looking for full-width spaces and multi-byte whitespace characters.
while/foreach/for loop Skip to Next Iteration
If you need to skip to the next item inside of a PHP loop its simple with the continue; control keyword. You can also use
Replace Everything Inside Two Strings
Using the built in PHP regex function preg_replace and property encoding the two strings you’re searching for with preg_quote you can remove all of the
Strip Image EXIF Data
Many times you’ll want to remove the meta data on user uploaded images to your website. The meta data automatically saved to the images can
Loop Through All Properties of a PHP Object
Looping through all of a PHP objects properties is just as easy as an array. Output:
Validating JSON
The PHP json_decode function will return a strict null if the string passed into it is invalid json or it can’t parse it successfully. The
Function To Remove All Cookies For The Domain
This PHP function will delete all valid cookies for a domain. We’re also sanitizing the cookie variable names from invalid characters.
How to do Email Validation
Using the PHP filter_var function we can test email addresses for valid format and only unicode characters. Example usage below.
Replace All Characters In a String that Aren’t Alphanumeric
Using the preg_replace function you can easily replace all characters in a string that are not alphanumeric. This can be useful for sanitizing a string