PHP code
public; Echo $this->protected; Echo $this->private; }} $obj = new MyClass (); Echo $obj->public; This line can be performed normally echo $obj->protected; This guild produces a fatal error. Echo $obj->private; This line will
PHP destructor Destruct What happens when the execution asks all the cases, is it encountered? The >php Terminator is also executed
Destructors are removed when all references to an object are deleted or executed when the object is explicitly
Destructors
Executes when an object becomes garbage or when an object is explicitly destroyed.
The destructor provided in PHP5 is destruct, which corresponds to the construction method construct.
Garbage collection--GC (garbage Collector)In PHP,
Destructor: Executes when an object becomes garbage or when an object is explicitly destroyed.
GC (Garbage Collector)
In PHP, when there are no variables pointing to this object, the object becomes garbage. PHP will destroy it in memory. This is
The following code to try to GB2312 encoding, the interception of Chinese strings is a headache in PHP, the solution is to determine whether the value is greater than or equal to 128来 if it is a double-byte character, to avoid garbled situations.
This article mainly for you in detail the PHP closure function, the closure function does not have a function name, directly in the function () when the variable can be used as a function of the variables defined as functions to deal with, the PHP
This article mainly introduces the example of PHP reflection reflection mechanism, this article from the use of reflection to obtain a class of information angle to introduce the reflection reflection mechanism of PHP, the need for friends can refer
This article mainly introduces the PHP framework Laravel implementation of Supervisor implementation of asynchronous process, the article introduces very detailed, I believe that we have a certain reference learning value, the need for friends below
This article mainly introduces PHP simple acquisition of random numbers of common methods, combined with examples of PHP implementation of the specified range of random number and the specified character sequence random number of simple
This article mainly for you in detail the PHP object-oriented user login authentication, with a certain reference value, interested in small partners can refer to
The example of this article for everyone to share the PHP user login authentication
This article focuses on a concise summary of the Magic method in the PHP class, including construct (), destruct (), call (), callstatic (), Get (), set (), toString (), and so on. A friend you need can refer to the following
1. Construct () and
In PHP development, if you encounter the server can not modify the relevant configuration and do not know if some of the server functions are open, the direct use of some special functions will cause the program error, such as Curl_init this system
This article mainly for you in detail the PHP image verification code generation code, with a certain reference value, interested in small partners can refer to
The example of this article for everyone to share a PHP package generated image
This article mainly introduces the method of automatic loading of classes in PHP. The automatic loading of classes means that there is no need to "ingest" the class file on the outside page, but the program will dynamically load the required class
This article mainly introduces the PHP string interception function usage analysis, gives two examples, respectively, the use of PHP's own string interception function and custom function to implement the method of string interception, is a very
This article mainly introduces the use of logs in the YII2 framework, compares the common methods of yii1.x analysis YII2 log operations and related use techniques, the need for friends can refer to the following
This article describes how logs are
This article mainly for you in detail the Yii2 tab of the simple use, with a certain reference value, interested in small partners can refer to
The example of this article for you to share the specific code used by the Yii2 tab for your reference,
This article mainly introduces the new process with Php+ajax (leave, arrival, shipment, etc.), the need for friends can refer to the following
For the manager, the computer operation of the leave process is much more efficient than the manual leave
Look at the code below.
function test () {$param 2 = ' every ';//Returns an anonymous function ($param 1) use ($param 2) {///using clause to let anonymous function uses its scope variable $param2. = ' O Ne ';p rint $param 1. ' ' . $param 2;};}
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