PHP memory overflow Allowedmemorysizeof solution Allowedmemorysizeof? Xxxbytes? I have tracked this problem before, but at that time the tool was not used very well. I didn't see it so carefully. this time I made a little detail and corrected my
5 , configuring the routing capability of the switchNote: Routing is only available on a three-layer switch, and other two-tier access switches are not allowed to transfer data between different VLANs until the routing is switched through the trunk
A Memory Overflow Solution When doing statistical analysis of data, often encounter large arrays, memory overflow may occur, here to share my solution. Use examples to illustrate the problem, as follows:Assuming that the log holds 500,000 records,
A Memory Overflow SolutionWhen doing statistical analysis of data, often encounter large arrays, memory overflow may occur, here to share my solution. Use examples to illustrate the problem, as follows:Assuming that the log holds 500,000 records,
In-depth analysis of the use of phpunset global variables. In actual use, the PHPunset global variable can only destroy local variables and cannot implement global variables. Next we will solve this problem in detail. Hope to help you. In actual use,
A Memory Overflow SolutionWhen doing statistical analysis of the data, often encounter large arrays, memory overflow may occur, here to share my solution. Or an example to illustrate the problem, as follows:Assuming that the number of records stored
This article provides a detailed analysis of the use of unset global variables in php. For more information about how to use the unset global variables in PHP, you can only destroy local variables, global variables cannot be implemented. Next we
We have introduced an article on how to choose the method of network fault elimination, and introduced three kinds of network troubleshooting methods. Here we return to the topic, through concrete examples to help you troubleshoot network failures.
A single routerA single switchTwo PC computers650) this.width=650; "src=" Https://s2.51cto.com/oss/201710/24/e13e645c97f691f4fd654f25a4c45037.png "title=" QQ picture 20171024093515.png "alt=" E13e645c97f691f4fd654f25a4c45037.png "/>Router
What php object-oriented friends need to know. What php object-oriented friends need to know.
First look at the code:
NULL, 'y' => NULL); function __construct() { print "StrictCoordinateClass is being created"; print ""; } function __destruct() {
After PHP object-oriented improvements, read some instructions after PHP object-oriented improvements, first look at the code :? PhpclassStrictCoordinateClass {private $ arr = array ("> First look at the code:
Class StrictCoordinateClass {Private $
Phpunset () destroys one or more variables. The unset function is a built-in function for php to destroy variables. we have introduced how to use unset to destroy static variables and global variables. at the same time, we can destroy array
: This article mainly introduces the PHP object-oriented Essence. if you are interested in the PHP Tutorial, you can refer to it. 1. use extends to implement inheritance and the meanings of the overloaded and magic methods
Class B extends
The
Php obtains the status of a variable.
Isset ()Isset ()-check whether the variable is setSyntax:Bool isset (mixed $ var [, mixed $ var [, $...])Note:If var exists, true is returned; otherwise, false is returned.Note:If the variable has been
One switch and two PCs to allow logging on to the switch terminal650) this.width=650; "src=" Https://s3.51cto.com/wyfs02/M00/08/80/wKiom1njSuyyR0gRAAAVhc4mtfA331.png "title=" QQ picture 20171015194505.png "alt=" Wkiom1njsuyyr0graaavhc4mtfa331.png "/>
Basic configurations of Cisco switches
One vswitch and two PCs can communicate with each other and allow login to the vswitch terminal.
Command Configuration:
SW1 # vlan database // enter the vlan database
% Warning: It is recommended to configure
The most comprehensive php memory overflow solution
1. memory overflow solution
During data statistical analysis, large arrays are often encountered, and memory overflow may occur. here is my solution. The problem is illustrated in the following
The unset function is a built-in function for php to destroy variables. we introduced how to use unset to destroy static variables and global variables, and how to destroy array variables. let's look at the example below. example 1. the unset ()
One point after PHP object-oriented improvements. First look at the code :? PhpclassStrictCoordinateClass {private $ arrarray (xNULL, yNULL); function _ construct () {printStrictCoordinateClassisbeingcreated; printbr ;}
First look at the code:
First look at the Code:Class StrictCoordinateClass {Private $ arr = array (x => NULL, y => NULL );Function _ construct (){Print "StrictCoordinateClass is being created ";Print " ";}Function _ destruct (){Print " ";Print "StrictCoordinateClass is
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