PHP
- Getting started with PHP
- Awesome Book
- Awesome Community
- Awesome Course
- Awesome Tutorial
- Awesome YouTube
- Alternative Syntax for Control Structures
- APCu
- Array iteration
- Iterating multiple arrays together
- Using an incremental index
- Using ArrayObject Iterator
- Using foreach
- Using internal array pointers
- Arrays
- Asynchronous programming
- Autoloading Primer
- BC Math (Binary Calculator)
- Cache
- Classes and Objects
- Closure
- Coding Conventions
- Command Line Interface (CLI)
- Comments
- Common Errors
- Compilation of Errors and Warnings
- Compile PHP Extensions
- Composer Dependency Manager
- Constants
- Contributing to the PHP Core
- Contributing to the PHP Manual
- Control Structures
- Cookies
- Create PDF files in PHP
- Cryptography
- Datetime Class
- Debugging
- Dependency Injection
- Design Patterns
- Docker deployment
- Exception Handling and Error Reporting
- Executing Upon an Array
- File handling
- Filters & Filter Functions
- Functional Programming
- Functions
- Generators
- Headers Manipulation
- How to break down an URL
- How to Detect Client IP Address
- HTTP Authentication
- Image Processing with GD
- Imagick
- IMAP
- Installing a PHP environment on Windows
- Installing on Linux/Unix Environments
- JSON
- Localization
- Loops
- Machine learning
- Magic Constants
- Magic Methods
- Manipulating an Array
- mongo-php
- Multi Threading Extension
- Multiprocessing
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- Outputting the Value of a Variable
- Parsing HTML
- Password Hashing Functions
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- PHP Built in server
- PHP MySQLi
- php mysqli affected rows returns 0 when it should return a positive integer
- PHPDoc
- Processing Multiple Arrays Together
- PSR
- Reading Request Data
- Recipes
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- Reflection
- Regular Expressions (regexp/PCRE)
- Secure Remeber Me
- Security
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- Serialization
- Sessions
- SimpleXML
- SOAP Client
- SOAP Server
- Sockets
- SPL data structures
- SQLite3
- Streams
- String formatting
- String Parsing
- Superglobal Variables PHP
- Traits
- Type hinting
- Type juggling and Non-Strict Comparison Issues
- Types
- Unicode Support in PHP
- Unit Testing
- URLs
- Using cURL in PHP
- Using MongoDB
- Using Redis with PHP
- Using SQLSRV
- UTF-8
- Variable Scope
- Variables
- WebSockets
- Working with Dates and Time
- XML
- YAML in PHP
PHP Array iteration
Syntax
- for ($i = 0; $i < count($array); $i++) { incremental_iteration(); }
- for ($i = count($array) - 1; $i >= 0; $i--) { reverse_iteration(); }
- foreach ($data as $datum) { }
- foreach ($data as $key => $datum) { }
- foreach ($data as &$datum) { }
Remarks
Comparison of methods to iterate an array
| Method | Advantage |
|---|---|
foreach | The simplest method to iterate an array. |
foreach by reference | Simple method to iterate and change elements of an array. |
for with incremental index | Allows iterating the array in a free sequence, e.g. skipping or reversing multiple elements |
| Internal array pointers | It is no longer necessary to use a loop (so that it can iterate once every function call, signal receive, etc.) |
Array iteration Related Examples
- Iterating multiple arrays together
- Using an incremental index
- Using ArrayObject Iterator
- Using foreach
- Using internal array pointers
