GitHub - bayfrontmedia/php-string-helpers: PHP helper class to provide useful string functions.
How to reverse string in PHP without using function? : r/codinginterview
0' as a string with empty() in PHP - Stack Overflow
PHP – empty() Explained – Tech Geek Galaxy
PHP String to Array Conversion । PHP Explode Function - YouTube
php - Illegal string offset 'name' and Uninitialized string offset: 0 - Stack Overflow
PHP Split String | Working of the PHP Split String with Examples
PHP Exercises: Remove the character in a given position of a given string - w3resource
PHP Data Types
PHP: Convert String to Number
PHP substr() function - w3resource
PHP String Exercise: Print the next character of a specific character - w3resource
How to change the string case? in PHP – BrainBell
Converting String to Array in PHP Using Different Methods
PHPyths Buster: A great string performance test! (updated) - Krzych Jończyk
PHP explode(): Split a String by a Separator into an Array of Strings
PHP Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /usr/local/www/firewall_rules.php:805 | Netgate Forum
PHP String Functions
Php - check if string is not empty or has a first character not equal to - Stack Overflow
Why does PHP consider 0 to be equal to a string? - Stack Overflow
PHP - Wikipedia
