


PHP mysql transaction problem example analysis, mysql example analysis
This article analyzes the PHP mysql transaction problem with an example. Share it with everyone for your reference, the details are as follows:
For myisam database, you can control the progress of transactions:
$mysqlrl = mysql_connect ( $db_config ["host"], $db_config ["user"], $db_config ["pass"], true ); if (! $mysqlrl) { $msg = mysql_error (); die ( 'Could not connect: ' . $msg ); } mysql_select_db ( $db_config ["data"], $mysqlrl ) or die ( "error: 数据库异常" ); mysql_query ( "SET NAMES 'utf8'" ); date_default_timezone_set ( 'Asia/Shanghai' ); /** * 事务操作过程 BEGIN COMMIT END */ mysql_query ( 'BEGIN' ); $flag3 = mysql_query ( $sql3); $flag1 = mysql_query ( $sql1); $flag2 = mysql_query ( $sql2); if ($flag1 && $flag1 && $flag3) { mysql_query ( 'COMMIT' ); mysql_query ( 'END' ); $data .= "\r\n" . "更新记录成功"; write_file ( $file, $data ); return true; } else { print mysql_error (); mysql_query ( 'ROLLBACK' ); mysql_query ( 'END' ); $data .= "\r\n" . "更新记录失败(⊙o⊙)!!!"; write_file ( $file, $data ); return false; } }
Readers who are interested in more content related to PHP operating MySQL can check out the special topic of this site: "Introduction Tutorial on PHP MySQL Database Operation"
I hope this article will be helpful to everyone in PHP programming.
Articles you may be interested in:
- PHP Mysql’s method of implementing transfer function based on transaction processing
- php Mysqli uses transaction processing to transfer money examples
- PHP Two solutions to implement MySQL nested transactions in
- php mysqli transaction control to implement bank transfer examples
- Pdo mysql transaction usage examples under PDO
- php to implement mysql transactions Processing method
- PHP operates MySQL transaction instance
- PHP uses Mysql transaction instance analysis
- Execute MYSQL transaction in PHP to solve the problem of incomplete data writing
- PHP mysql and mysqli transaction usage instructions sharing
- Analysis of php mysql transaction rollback operation (with examples)
- php mysql transaction rollback&commit example

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

在PHP中,可以利用implode()函数的第一个参数来设置没有分隔符,该函数的第一个参数用于规定数组元素之间放置的内容,默认是空字符串,也可将第一个参数设置为空,语法为“implode(数组)”或者“implode("",数组)”。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

SublimeText3 Mac version
God-level code editing software (SublimeText3)

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

Notepad++7.3.1
Easy-to-use and free code editor

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
