Understand What are PHP Data Types
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UNIT-III Overview of PHP Data types and concepts: Variables and data types, Operators, Expressions and statements, strings, arrays and functions. - ppt download
Data Types in PHP - YouTube
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PHP Data Types In Hindi » Master Programming
Generics in PHP via PHPDocs - DEV Community
Beginner guide of PHP Strings - DevOpsSchool.com
Php String | Single Quoted PHP String | Double Quoted PHP String
PHP Data Types example and How to use in program
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Declare types to function arguments, return values, and properties
PHP - Variable Types
PHP - Data Types - PHPGurukul
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How To Work with Strings in PHP | DigitalOcean
php - Why does my constant integer type convert to string? - Stack Overflow
PHP: Convert String to Number
Laravel version 8.64.0, PHP version 8.1.0, strtolower(): Passing null to parameter #1 ($string) of type string is deprecated · Issue #886 · beyondcode/laravel-websockets · GitHub
