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PHP5 object-oriented explanation-(10) _ set () _ get () _ isset () _ unset () four methods. This article briefly introduces four methods for PHP5 object-oriented explanation-(10) _ set () _ get () _ isset () _ unset, if you have any questions,

This article briefly introduces four methods for PHP5 object-oriented explanation-(10) _ set () _ get () _ isset () _ unset, if you have any questions, please refer to them. Application of four methods: _ set () _ get () _ isset () _ unset ()In

First look at the unset function syntax unset Deletes a variable. Syntax: int unset (mixed Var); return value: Integer Function type: PHP system function Content Description This function deletes the variable and returns a true value for

PHP unset Global variables can only destroy local variables in actual use, and can not achieve the purpose of global variables. Here we will deal with this problem concretely. Hope to help you. Some functions in the language of PHP are literally

The unset () function of PHP is used to clear and destroy variables. unused variables can be destroyed using unset. However, in some cases, the memory occupied by destroying variables cannot be reached with unset! The code is as follows: For ($ I =

The unset () function of PHP is used to clear and destroy variables. unused variables can be destroyed using unset. However, in some cases, the memory occupied by destroying variables cannot be reached with unset! Copy codeThe code is as

The PHP unset () function is used to clear, destroy variables, and we can destroy them with unset (). But at some point, using unset () does not achieve the memory that is consumed by destroying variables! Let's look at an example first:

PHP magic methods _ ISSET and _ UNSET use instances __isset _ unset _ Isset ()-if there is no or non-public attribute when the isset () method is used for attributes in the class or non-class, the _ isset () method is automatically executed. _ Unset

The PHP unset () function is used to clear, destroy variables, and we can destroy them with unset (). But at some point, using unset () does not achieve the memory that is consumed by destroying variables! Let's look at an example first:PHP

The unset () function of PHP is used to clear and destroy variables. unused variables can be destroyed using unset. However, in some cases, the memory occupied by destroying variables cannot be reached with unset! Let's first look at an example:

In actual use, PHP unset global variables can only destroy local variables and cannot implement global variables. Next we will solve this problem in detail. Hope to help you. Some functions in PHP are literally hard to understand for beginners. You

In php object-oriented language, _ set _ get _ isset _ unset usage is introduced. We often see the usage of bit _ set _ get _ isset _ unset in php object orientation, but we do not understand why we should use these items, next we will introduce one

Php variable destruction unset usage. Php Tutorial variable destruction unset usage unset -- release the given variable description voidunset (mixedvar [, mixedvar [,...]) unset () destroy the specified variable. Note: in PHP3, unset (php Tutorial

Copy CodeThe code is as follows: for ($i = 1; $i $str = str_repeat (' 01234567 ', $i); $a = Memory_get_usage (); Unset ($STR); $b = Memory_get_usage (); echo "\ n ". $i. ': '. ($b-$a). ' Bytes. '; } As seen from the results: 8 x 32 = 256 It is

Reprinted from: http://www.okajax.com/a/201106/php_unset.html The unset () function of PHP is used to clear and destroy variables. unused variables can be destroyed using unset. However, in some cases, the memory occupied by destroying variables

Copy Code code as follows: for ($i = 1; $i $str = str_repeat (' 01234567 ', $i); $a = Memory_get_usage (); Unset ($STR); $b = Memory_get_usage (); echo "\ n ". $i. ': '. ($b-$a). ' Bytes. '; } From the result, we see: 8

The unset function is a function of PHP's own destruction variables, we introduced the use of unset to destroy the static variables and global variables, and can destroy the array variable Oh, let's look at the example below. Example 1. Unset ()

10. _ set () _ get () _ isset () _ unset () application of four methods In general, the class attribute is always defined as private, which is more in line with the actual logic. However, read the attributeAnd value assignment operations are very

PHP Tutorial Variable Destruction unset usage Unset--releasing the given variableDescribevoid unset (mixed var [, mixed Var [, ...]]) Unset () destroys the specified variable. Note in PHP 3, unset () returns True (actually an integer value of 1),

Copy codeThe Code is as follows:For ($ I = 1; I I $ Str = str_repeat ('20140901', $ I );$ A = memory_get_usage ();Unset ($ str );$ B = memory_get_usage ();Echo "\ n". $ I. ':'. ($ B-$ a). 'bytes .';} The result shows that:8x32 = 256 it is really