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php5.2 's new JSON functionality is very popular, but it has been tested and found Json_encode's handling of Chinese is problematic, 1. GB encoding cannot be processed, all GB encodings are replaced with null characters. 2.UTF8 encoded in Chinese is encoded as Unicode encoding, which is equivalent to the result of JavaScript's escape function processing. Copy CodeThe code is as follows: /* In order to use
I don't know when to start, there is a saying on the network that the partition for installing Vista cannot be less than 15 GB. As a result, this statement has been spread across 10 and 10, and gradually becomes the "only standard ". However, I have always had doubts about "true", so I found a time to practice it myself. I did a test on IBM t42. The general hardware environment and system environment are as follows: IBM t42 Model
The folder size in the USB flash drive is dozens of GB. The folder size is garbled and cannot be deleted. Today, I inserted a USB flash drive on my classmate's computer and copied a video file. Later, I installed the system and used the USB flash drive to copy the driver file, but I couldn't install the copied driver file, A black window always disappears. I started to suspect that the driver file was damaged. Then I decompressed the driver file on m
I have a 60 GB Kingston solid state drive, tested the difference between 4 K partition alignment and found that the performance is very different, not to mention, first, the software optimization and testing software below, download URL:There is no running score with 4 K partition alignment firstNote that 31 k-BAD means that 4 k does not mean alignment.650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131227/19141355V-0.png "border =
json_encode to Chinese processing is a problem, not processing GB encoding, all GB code will be replaced with empty characters, there is a good solution, you can refer to the following php5.2 's new JSON feature is very popular, but tests have found that,nbsp; Json_encode has a problem with Chinese processing,nbsp; 1. GB encoding cannot be processed, and all
In the computer newspaper, I saw that ABN Amro's 20 data centers have about 7PB of disk and more than 20PB of tape storage, and the annual 50%~70% growth of storage, So I want to see how big the PB is, and calculate the 27PB size of the hard disk about 400,000 80. 1Byte = 8 Bit (0,1) 1 KB = 1,024 Bytes (size of a shortcut) 1 MB = 1,024 KB = 1,048,576 Bytes (size of one floppy disk) 1 GB = 1,024 MB = 1,048,576 KB = 1,073,741,824 Bytes (size of an AVI m
result of the ip2addr function can only be dynamically converted. There are at least four methods for dynamic conversion of GB-> UTF-8 encoding: Extended conversion using php iconv Extended conversion using PHP mb_string Use swap table conversion, swap table stored in MySQL database Convert tables with swap tables and store them in text files. The first two methods can be used only when the server has made corresponding settings (the corresponding e
Json_encode is a problem in processing Chinese characters and cannot process GB encoding. all the GB encoding will be replaced with null characters. Below is a good solution, you can refer to the new json function in php5.2, which is very popular. However, after testing, we found that, Json_encode is problematic in processing Chinese characters, 1. cannot process the GB
This is a creation in Article, where the information may have evolved or changed. In April I gave a presentation to the GDG Berlin Meetup Group (slides, video) discussing my views on reproducible Bui LDS using the Go programming language. Image Credit, Nate Finch As part of this presentation I demonstrated a replacement build tool that I had been developing, GB. From the feedback I received after the meetup it is clear that many people understood and
The problem is as follows:In 12c, we tested two cases:The first is to add hint, so that the 12c execution plan is similar to 10 GB, but because of the 12c nlj_batching, a nestloop is added. However, the execution plan is essentially the same, and the index S_CONTACT_X_U1 returns the table query.The second is to use 10g outline hint, OFE = 10g, and the execution plan is exactly the same.However, we found that, no matter which case in 12c, the index PA_
Linux supports the maximum file size (can I support files larger than 4 GB )? Data files created on Oracle (Linux)Can I support files larger than 4 GB? A:In Linux, there are very few such stupid restrictions on file systems, but any file system is limited. The following is an incomplete small list: NTFS (Windows): supports up to 2 TB of partitions and 2 TB of files.Fat16 (Windows): supports a maximu
The previous article describes how to use bitmap to sort non-duplicate data. The Sorting Algorithm is ready at a moment. I want to test the big data, because small data is quickly ranked in the memory. I. dataset generation requirements 1. The data is an integer in the range of 0--2147483647 (2 ^ 31-1; 2. The dataset contains an integer ranging from 0 to 2 ^ 31-1 of 60%, that is, the number of kicked 40%; 3. No duplicate data in the dataset, that is, the two numbers are not equal; 4. The generat
As the price of physical memory continues to decline, MB or even 1 GB memory has become the standard for installation. The increase in memory capacity has significantly improved the system performance. However, some people have suggested that: when the memory exceeds 1 GB, you do not need to set the virtual memory. You can disable it to save hard disk space. Is that true? What is virtual memory? The virtual
Today, many problems occurred when I opened Ubuntu Linux under VMware. Because I modified a lot of configurations, I found that there were too many memory allocations. I allocated 4G memory to it, but it cannot be used in xwindows. Only the character interface can be entered. My environment is Windows 64-bit. The host has 8 GB of memory. Intel e8200 CPU. VMware Workstation 8.02 is installed on it. The official original version is installed. Do not t
Today, let's take a look at how convenient it is to use the batch processing command to back up a table during database backup in oracle 10 Gb. Today, let's take a look at how convenient it is to use the batch processing command to back up a table during database backup in oracle 10 Gb. Note: 1. I use an oracle 10 Gb database and export emp and dept tables under
2010-12-1110: the gb simulator under 42Ubuntu. There are several interesting ones. I tried kigb and vgb, but it was so sloppy. More well-known, VisualBoyAdvance-MSVN877 is the vba-msvn877linux special edition. I have succeeded. Go to the home page of the sourceforge project. There is a deb package directly. [6688 e-commerce website www.6688.cc] ubuntu 10: The gb simulator under 42Ubuntu. There are several
The research direction is the recommendation system. Recently, python is used to implement a simple label-based recommendation algorithm on the delicious dataset, and then calculate recall and precision. The running time on a few M small datasets is still acceptable (about 10 seconds), but it is very slow on a large (several hundred megabytes, 1 GB) dataset, I have waited for four hours and have not yet figured out the result. What methods can be used
How to properly partition and install linux after installing windows-Linux general technology-Linux technology and application information? For more information, see the following. Disk device physical information: Manufacturer Seagate Hard Disk name: Barracuda 7200.10 320620 Shape features 3.5" Formatting capacity 320 GB Disk quantity 2 Record area 4 Dimension: 146.99x101.6x26.1 Maximum weight: 635 GB
Use the filesize () function command to calculate the file size. The value 1 must be an output of GB, MB, KB, and B. 2. the order of magnitude must be greater than 1 and less than 1024, and two decimal places must be retained;Start:Copy codeThe Code is as follows:$ Len = filesize ("1. rmvb ");$ I = 4;While ($ I ){If ($ out = $ len/pow (1024, $ I)> 1.0 | $ I = 1 ){Switch ($ I ){Case 4: {printf ("%. 2f TB", $ out); break ;}Case 3: {printf ("%. 2f
Some time ago, I saw "The maximum number of 100 files in GB ". So I wrote this article. Author: Li chengxiang Requirement: a gb file contains all numbers, and each number is separated by a comma. Find the maximum number of 100 numbers. Source sticker http://topic.csdn.net/u/20091013/10/d5d371dc-6dec-4034-bf31-432a47ffce96.html Note: The method is important, so GB
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