Php
/
Array
- 1 Basics 5
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Quotes S
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Constants S
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Control structures S
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Reference S
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Number systems S
- 2 Variables 4
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Definition S
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Variable variable S
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Exists S
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Type casting S
- 3 Operators 5
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Aritmetic S
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Bitwise S
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String S
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Comparison S
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Logical S
- 4 Function 4
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Definition S
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Anonymous S
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Reference S
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Variable arguments S
- 5 Array 7
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Basics S
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Operations S
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Create S
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Search S
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Modify S
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Sort S
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Storage S
- 6 String 9
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Basics
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Compare
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Search
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Replace
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Format
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Regexp
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Parse
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Formating
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Json
- 7 Streams 6
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File open
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Read file
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Read csv
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File contents
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Context
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Ob_start
- 8 Oop 6
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Object instantiation S
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Class constructor
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Interfaces, abstract
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Resource visibility
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Class constants
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Namespaces
- 9 Features 9
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Autoload
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Class reflection
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Magic methods
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Late static binding
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Type hinting
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SPL
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PHPUNIT
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PHAR
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Php7.4 S
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Php8.0 S
- 11 Http 4
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Headers
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File Uploads
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Cookies
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Sessions
- 12 Design Patterns 4
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Singleton Pattern S
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Observer Pattern
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Strategy Pattern
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Registry
- 13 Modern Php 8
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Composer S
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Slim Framework
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Autoloader
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Package
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Releases
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Generators
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Dependency Injection
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Middleware
- 14 Create Framework 7
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App
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Http Foundation
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Front Controller
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Routing
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Render Controller
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Resolver
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SoC
- 15 Frameworks 4
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Symfony v5
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Laravel v8
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Codeigniter v4
- 16 Composer 5
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Guzzle
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Faker
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Math
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Requests
- 17 Symfony 6
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Routes S
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Annotations
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Flex
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Controllers
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Doctrine
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Templating
S
R
Q
Php Array Modify
Add or remove element / slice Remove duplicate values array_shift([2,3]) == 2 // first array_unique([1,2,2,3]) == [1,2,3]
Add
Add or remove element from array
/**
* array_push() add at the end
* array_shift() extract first
* array_unshift() add at beggining
* arrau_pop() extract last
*/
$A = [1, 2];
$B = [2, 3];
$C = [1, 2];
$D = [2, 4];
array_push($A, 3);
$A[] = 4; // faster
print_r($A); // 1,2,3,4
echo array_shift($B); // 2 (first)
array_unshift($C, 100);
print_r($C); // 100,1,2
echo array_pop($D); // 4
Slice
Extract a slice of the array
/**
* array_slice(), array_splice()
*
* Extract or remove a portion from array
*/
$A = [1, 2, 3, 4, 5];
print_r(array_slice($A, 2)); // 3, 4, 5
print_r(array_slice($A, 0, 2)); // 1, 2
print_r(array_slice($A, -2, 1)); // [0] => 4
print_r(array_slice($A, -2, 1, true)); // [3] => 4 (preserve keys)
$B = array(1, 2, 3, 4, 5);
print_r(array_splice($B, 2)); // [ 1, 2 ]
Duplicates
array_unique() - Remove duplicate values from an array
/**
* array_unique()
*
* Removes duplicate values from an array
*/
$A = [1, 2, 'b'=>'green', 2];
$B = array_unique($A);
print_r($B); // 1, 2, green
Padding
Pad array to the specified length with a value.
/**
* array_pad()
*
* Pad an array to the specified length
*/
$A = [1,2,3];
$B = array_pad($A, 6, 0);
print_r($B); // 1, 2, 3, 0, 0, 0
echo str_pad(111, 6, 0); // 111000
➥ Questions