PHP - How to convert integer to string? - TutorialKart
php - Why does my constant integer type convert to string? - Stack Overflow
PHP Integer | Types and advance examples of PHP Integer
Java Convert int to String - javatpoint
Character escape sequences and numeric notations in PHP • PHP.Watch
How to return int and string in PHP Json API output? - Stack Overflow
PHP String Exercise: Remove comma(s) from the specified numeric string - w3resource
PHP - Concatenate string and number
What are type errors in PHP 7? - Thijs Feryn
Convert a string with numbers to numeric values in webform template? [#3048978] | Drupal.org
String Functions in PHP: Part 8
How to Remove Numbers from String in PHP - Laravel Plug
Formatting Strings with PHP :: Hour 13. Working with Strings :: Part III: Getting Involved with the Code :: PHP, MySQL and Apache in 24 hours :: Programming :: eTutorials.org
Convert a string to a number in PHP - WP2X
PHP: Convert String to Number
How to convert integer to string in php. - YouTube
Important PHP String Functions. A string is group of characters. It is… | by Shankar Babu Acharya | Medium
strpos in PHP: Syntax, Uses And Parameter Values (With Their Usecase)
PHP Implode – Convert Array to String with Join
PHP - Check if given string is number
PHPyths Buster: A great string performance test! (updated) - Krzych Jończyk
PHP Tutorial - Check if a variable is a number or a numeric string in PHP
Type Conversion: Convert variable data type in PHP – BrainBell