PHP Strings - java4coding
PHP Exercises: Count the number of strings with given length in given array of strings - w3resource
PHP Regular Expression Exercise: Remove all characters from a string except a-z A-Z 0-9 or blank - w3resource
Generating a Timestamp in PHP – BrainBell
PHP Strings - AlphaCodingSkills
PHP Data Types
How to reverse string in PHP without using function? : r/codinginterview
PHPyths Buster: A great string performance test! (updated) - Krzych Jończyk
trim() in PHP | Tree Types of trim() in PHP You Need To Know
Why does PHP consider 0 to be equal to a string? - Stack Overflow
PHP Split String | Working of the PHP Split String with Examples
php - Illegal string offset 'name' and Uninitialized string offset: 0 - Stack Overflow
GitHub - bayfrontmedia/php-string-helpers: PHP helper class to provide useful string functions.
Reverse a String in PHP without using strrev() Method
7 PHP String Functions You Should Know and How To Use Them - Digital Owl's Prose
PHP String to Array Conversion । PHP Explode Function - YouTube
Beginner guide of PHP Strings - DevOpsSchool.com
explode - Why do dollar symbols not appear in a double-quoted PHP string? - Stack Overflow
PHP String Exercise: Print the next character of a specific character - w3resource
regex - URL string compare not working in php - Stack Overflow
PHP Exercises: Remove the character in a given position of a given string - w3resource
PHP substr() function - w3resource
How to change the string case? in PHP – BrainBell
