PHP String Exercise: Print the next character of a specific character - w3resource
How to Count a specified characters in a string in PHP - YouTube
Php - check if string is not empty or has a first character not equal to - Stack Overflow
Converting String to Array in PHP Using Different Methods
The PHP File_Get_Contents() Function - Read File Into A String - PHP Tutorials
PHP substr() function - w3resource
php - Illegal string offset 'name' and Uninitialized string offset: 0 - Stack Overflow
7 PHP String Functions You Should Know and How To Use Them - Digital Owl's Prose
How to Reverse String in PHP | Custom Function - YouTube
Reverse a String in PHP without using strrev() Method
PHP: Convert String to Number
How to change the string case? in PHP – BrainBell
Type Casting in PHP | CodeAhoy
Generating a Timestamp in PHP – BrainBell
PHP – empty() Explained – Tech Geek Galaxy
PHPyths Buster: A great string performance test! (updated) - Krzych Jończyk
explode - Why do dollar symbols not appear in a double-quoted PHP string? - Stack Overflow
trim() in PHP | Tree Types of trim() in PHP You Need To Know
PHP Exercises: Count the number of strings with given length in given array of strings - w3resource
0' as a string with empty() in PHP - Stack Overflow
PHP Strings - java4coding
PHP - Wikipedia
PHP Data Types
GitHub - bayfrontmedia/php-string-helpers: PHP helper class to provide useful string functions.
PHP String to Array Conversion । PHP Explode Function - YouTube
