The following small series for you to share a PHP use Ob_start () to clear the output and the selective output of the method, has a good reference value, I hope to be helpful to everyone. Let's take a look at it with a little knitting.
I.
Http://www.cnblogs.com/chengmo/archive/2010/10/20/1855805.htmlBefore we get to the redirect, let's take a look at the Linux file descriptor.Linux File Descriptor : Can be understood as a Linux trace open file, and the allocation of a number, this
1. Conversion specifiers% A (% A) floating point number, hexadecimal number, and p-(P-) Notation (C99)% C characters% D signed decimal integer% F floating point number (including float and doulbe)% E (% E) floating point number index output [e-(E-)
PHP output cache ob series functions. Basic principle of ob: If the ob cache is enabled, the echo data is first stored in the ob cache. For header information, it is directly stored in the program cache. When the page is executed to the end, the
Input and output redirection is supported in Linux environments, denoted by symbols .0, 1, and 2 represent standard input, standard output, and standard error message output, which can be used to specify the standard input or output that needs to be
Introduction to PHP Buffering
In fact, my impression of the PHP OB series is still very vague, specific how to play, is not very understanding, peacetime curd, do not go into these content. As Phper is very ashamed. Online Search a pass, mutual
I often see people in the forum asking when using process Components How to obtain the output of a new process after it is started. The sub-process output is directed to a temporary File Of course, the problem can also be solved. However, every time
######################################## ### Title about output buffering ## organize diegolympus @ Lin ## original ByZeevSuraski #################### #################### Outputbuffering) why does the directory HTTPHeader use OutputBuffering
The control of the LPC1788 universal IO port contains some basic components, such as setting push-pull output, open-drain output, pull-up resistors, and so on, which we'll look at today.First use Gpio to open Gpio's system clockLpc_sc->pconp |=
Basic Principle of ob: If the ob cache is enabled, the echo data is first stored in the ob cache. For header information, it is directly stored in the program cache. After the page is executed, the ob cached data is put into the program cache and
The basic principle of OB: If the OB cache is turned on, the Echo data is first placed in the OB cache. If header information is placed directly in the program cache. When the page executes to the end, the OB-cached data is put into the program
MyCommand >mylog.txt 2>&1 should be the most classic usage.
The result of the command can be directed output in the form of "%>",% representing the file descriptor: 1 is standard output stdout, 2 is standard error stderr. The system default% value
log4j output multiple custom log filesIf you need to output a separate log file in the actual application, how can you separate the required content from the original log and form a separate log file?
First look at a common log4j.properties file,
#include #define SUM 3+4//macro definition is intact using used for test4#include //used for Test8~9#include //used for Test8~9void Test () {//array outputint a[5]={1,2,3,4,5};printf ("Array output,look,please...\n");int a[10];int i;//for (int
From: Click to open the link
Printf output format favoritesFormat code A ABC ABCDEFGH% S A ABC ABCDEFGH% 5 S #### A ## ABC ABCDEFGH%. 5 S A ABC ABCDE% 5.5 S #### A ## ABC ABCDE%-5 s a #### ABC # ABCDEFGH
Printf format string
Format code 1-12 12345 12
Output buffers for PHP
What is a buffer?
Simply put, the function of the buffer is to put the input or output of the content into the memory, and not display or read. As to why there is a buffer, this is a very broad problem, if interested, you can
Substitution is what.
Shell when it encounters an expression that contains one or more special characters for substitution. Example:
The following example enables printing to replace the value of the variable with its value. and "" is a new line to
Full format control for printf:
%-0 M.N L or H format characters
The following is a description of the constituent format description:
①%: Represents the starting symbol for the format description and is not missing.
②-: Has-represents the
Mycommand> mylog.txt 2> & 1 should be the most classic usage.
Command results can be output in the form of "%>", % indicates the file descriptor: 1 indicates the standard output stdout, and 2 indicates the standard error stderr. The default value of
By default, the output of a string to the browser, after 3 stages of PHP buffer->tcp buffer-> Browser (some versions of IE browser also exist buffer)PHP default is to open the output buffer, in php.ini can be configured output_buffering=4096 (4KB, a
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.