Php
/
Features
- 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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Exceptions S
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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
- 10 Versions 2
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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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Laminas v3
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Codeigniter v4
- 16 Composer 5
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Guzzle
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Carbon
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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
R
Q
ArrayObject
SPL means Standard PHP Library ArrayObject allows arrays to work as objects
code
$array= array('a','b','c');
$obj = new ArrayObject($array);
$obj->append('d');
echo $obj->count(); // 4
$iterator = $obj->getIterator();
while($iterator->valid()) {
echo $iterator->current(); // abcd
$iterator->next();
}
Serializable
Interface for customized serializing
code
class Obj implements Serializable
{
private $data;
public function __construct()
{
$this->data = "My private data";
}
public function serialize()
{
return serialize($this->data);
}
public function unserialize($str)
{
return unserialize($str);
}
}
$obj = new Obj();
echo $str = $obj->serialize(); // s:15:"My private data";
echo $obj->unserialize($str); // My private data
ArrayAccess
Interface to provide accessing objects as arrays
code
class myArray implements ArrayAccess
{
protected $array = array();
public function offsetExists($offset)
{
return array_key_exists($this->array[$offset]);
}
public function offsetGet($offset)
{
return $this->array[$offset];
}
public function offsetSet($offset, $value)
{
if (! is_numeric($offset)) {
throw new Exception ("Invalid Offset!");
}
$this->array[$offset] = $value;
}
public function offsetUnset($offset)
{
unset($this->array[$offset]);
}
}
$ma = new myArray();
$ma[1] = 2; // Works
$ma['a'] = 3; // Throws exception
Iterator
Interface for external objects that can be iterated themselves
code
class myArray implements Iterator
{
private $_data = array('foo', 'bar', 'baz');
private $_current = 0;
public function current()
{
return $this->_data[$this->_current];
}
public function next()
{
$this->_current += 1;
}
public function key()
{
return $this->_current;
}
public function valid()
{
return isset($this->_data[$this->_current]);
}
public function rewind()
{
$this->_current = 0;
}
}
$ma = new myArray();
echo $ma->valid(); // 1
echo $ma->current(); // foo
$ma->next();
$ma->next();
echo $ma->key(); // 2
$ma->rewind();
while($ma->valid()) {
echo $ma->current(); // foobarbaz
$ma->next();
}
➥ Questions
Last update: 516 days ago