Replace a portion of string by position in PHP – BrainBell
Php - check if string is not empty or has a first character not equal to - Stack Overflow
GitHub - heavenshell/php-string-filter: Porting p5-string-filter to PHP
How to change the string case? in PHP – BrainBell
GitHub - GroundSix/php-string-manager: StringManager Component
PHP: Convert String to Number
Pattern Matching with preg_match and preg_match_all in PHP – BrainBell
PHP substr() function - w3resource
PHP Program to count the vowels, digits, and spaces in a string | T4Tutorials.com
PHP Exercises: Remove the character in a given position of a given string - w3resource
pflag — Better parse command line flags in PHP | by Simon Tony | ITNEXT
Find positions of a substring in a string in PHP – BrainBell
PHP Type Juggling. PHP has two comparisons loose (==, =!)… | by HacktheBoxWalkthroughs | Medium
7 PHP String Functions You Should Know and How To Use Them | by Joshua Otwell | Level Up Coding
PHP String Function | Different Examples of String Function in PHP
Vowels Count in PHP | Count the Vowels of a given String using HTML Form and PHP - YouTube
Split, tokenize, and iterate a string in PHP – BrainBell
explode - Why do dollar symbols not appear in a double-quoted PHP string? - Stack Overflow
0' as a string with empty() in PHP - Stack Overflow
PHP String Exercise: Print the next character of a specific character - w3resource
Why does PHP consider 0 to be equal to a string? - Stack Overflow
php - Illegal string offset 'name' and Uninitialized string offset: 0 - Stack Overflow
Converting String to Array in PHP Using Different Methods
PHP – empty() Explained – Tech Geek Galaxy
PHP String Comparison - YouTube
