Using property files in php

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PHP properties implementation

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README.md

PHP Properties implementations based on getters or setters method and used PSR-5 PHPDoc information.

composer require serafim/properties

Properties provide the ability to control the behavior of setting and retrieving data from an object fields.

There are no properties at the language level, but they can be implemented with the some additional functionality.

class MyClass < protected $a = 23; public function __get($field) < return $this->$field; > > $dto = new MyClass(); echo $dto->a; // 23 $dto->a = 42; // Cannot access protected property MyClass::$a

This code example does not provide type-hint and autocomplete. Using magic without the ability to control it is always a bad option. . well, it looks awful %)

We can fix some problems using PSR-5. In this case, we can add a docblock.

/** * @property-read int $a */ class MyClass < // . 

But this docblock only adds information for the IDE and does not affect the code itself. At the same time, you should always keep it up to date.

But wait! We have another problem.

$dto = new MyClass(); echo isset($dto->a); // false

This is obviously a bug. We still need to add __isset , __unset and __set support.

Now let’s see what the serafim/properties package provides.

/** * @property $a */ class MyClass < use Serafim\Properties\Properties; protected $a = 23; > $dto = new MyClass(); $dto->a; // 23 $dto->a = 42; // Ok $dto->a; // 42

To indicate that the type should be readonly use @property-read annotation.

/** * @property-read $a */ class MyClass < use Serafim\Properties\Properties; protected $a = 23; > $dto = new MyClass(); $dto->a; // 23 $dto->a = 42; // Error: Property MyClass::$a is readonly

To indicate that the type should be readonly use @property-write annotation.

/** * @property-write $a */ class MyClass < use Serafim\Properties\Properties; protected $a = 23; > $dto = new MyClass(); $dto->a = 42; // 42 $dto->a; // Error: Property MyClass::$a is writeonly

For getter or setter override just declare get[Property] ( is[Property] for bool values will be works too) or set[Property] methods.

/** * @property-read int $a */ class MyClass < use Serafim\Properties\Properties; protected $a = 23; protected function getA() < return $this->a + 19; > > $dto = new MyClass(); echo $dto->a; // 42 (because 23 + 19 = 42) $dto->a = 42; // Error: Property is read-only (@property-read doc declaration)

/** * @property-write string $anotherProperty */ class Some < // . protected $anotherProperty = 'some'; /** * @param string $newVal */ public function setAnotherProperty($newVal) < // Just example if (mb_strlen($newVal) > 4) < throw new InvalidArgumentException('. '); > $this->anotherProperty = $newVal; > >

All these annotations fully work in the IDE, including autocomplete and highlighting incorrect behavior.

All properties with writeable behavior will be «type checkable».

/** * @property int|null $a */ class Some < use Serafim\Properties\Properties; protected $a; > // $some = new Some; $some->a = 23; // Ok $some->a = null; // Ok $some->a = 'string'; // Error: "TypeError: Value for property Some::$a must be of the type int|null, string given"

• int (or integer ) — property value are integer
• bool (or boolean ) — value are boolean
• float (or double ) — value are float
• string — value are string or object with __toString method
• null (or void ) — value are nullable
• resource — value are resource
• object — value can be any object
• mixed — no type checking
• callable — value can be string, instance of \Closure, array with 2 args or object with __invoke method
• scalar — value cannot be an object
• countable — value can be a countable (array or object provided Countable interface).
• self — value can be object of self class or string with name of self class

self keyword does not available yet: it will be supports in future

static keyword does not available yet: it will be supports in future

$this keyword does not available yet: it will be supports in future

• array — value is type of array
• Class[] — value is type of array or instance of \Traversable
• scalar[] — value is type of array or instance of \Traversable
• Collection<> — value is type of array or instance of «Collection» and \Traversable
• Collection — value is type of array or instance of «Collection» and \Traversable
• Collection — value is type of array or instance of «Collection» and \Traversable

Conjunction And Disjunction

• a|b — means that the value must be type (a or b) .
• a&b — means that the value must be type (a and b) .
• a|b&c — means that the value must be type (a or (b and c)) .

The code is quite effective, but in the production mode you should use caching. The package implements support for the PSR-16 standard.

$driver = new Psr16CacheDriver(); // Your PSR16 cache driver implementation $properties = Serafim\Properties\Bootstrap::getInstance(); $properties->setCacheDriver($driver);

About

PHP properties implementation

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Road To Automation

For reading and writing data into properties file I am using parse_ini_file() function in this post.
Create a file name with extension .properties like I have created below:

If you run above file you will get Name and Url values.

Writing Data: below code write data into mentioned file if key is already exist then it update value and if key not exist it add new key value. Also if file not exist then it create new file.

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For reading and writing data into properties file I am using Properties class in this post. Create a file name with extension .properties .

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Can we have PROPERTIES file in PHP like JAVA?

posted 11 years ago

I want to know can we have .PROPERTIES file as like JAVA in PHP to access resources?
if yes then tell me how is it?

Aniket Kulkarni
Oracle Certified Professional, Java SE 6 Programmer.

posted 11 years ago

yes you can use properties file but it doesn’t behave like in java, let say you have file like this.

value1 =text one
value2 =text two
value3 =text three

so when you load this file like this.

this returns you the array like this

while php has another way of loading key value file using parse_ini_file check this out.

posted 11 years ago

• 1

Java uses properties files because Java code gets compiled into binary format and therefore making any code changes becomes difficult. By removing configuration values ot a text file, Java enables people to change the confioguration without recompiling.

PHP, on the other hand, is not compiled into binary. Therefore, the PHP files are always editable by a a plain text editor. Most PHP apps handle confguration options by placing them into a separate PHP file with lots of comments describing each setting. And the settings are directly made to variables. Then any PHP code that needs those settings includes that file and then uses the variables. For an example of this, look at the settings.php file that comes with Drupal.

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