php increment number

Sequencee can perform auto-increment and auto-increment operations on one or more fields of a single instance, or perform batch auto-increment and auto-increment operations on data that meet the conditions. The auto-increment and auto-increment of a

& Lt; spanstyle = & quot; color: rgb (54,46, 43); font-family: Simsun; font-size: 16px; line-height: 24px; text-indent: 2em; & quot; & gt; when we were studying the first language, for example, the C language programming in a university course,

Increment decrement operator Before increment ++++ $a $ A increments by 1 and then returns $ A After increment + + + $a first return $ A, then $ A since 1 Before decrement----$a $ A self minus 1 and then return $ A After decrement--$a--returns $ A,

In the development process, we usually use auto-increment numbers as the id primary key for data tables, and id is a numeric type, which is not easy to understand. After converting IDs into numbers in a certain format, it is easy to know what the

Search on the Internet, there are two ways, but not too good: one is simply a process id+ time stamp, or process id+ random number to produce an approximate unique ID, although simple but for the pursuit of "perfect" I do not want to do so, and then

1, bitwise operatorsThe bitwise operator is used to set the specified bit of an integer number, and if the operand is a string, the ASCII value of the string is manipulated. Type of operation Operator Example Results

PHP uses POD to access MySQL database, how to return the last inserted record of the self-increment number ID PHP uses POD to access MySQL database, how to return the last inserted record of the self-increment number ID Share to: more ---

This article introduces the content of the PHP implementation ID self-increment and specify the number of bits, has a certain reference value, now share to everyone, the need for friends can refer to In the development process often encountered

1, bitwise operatorsThe bitwise operator is used to set the specified bit of an integer number, and if the operand is a string, the ASCII value of the string is manipulated. Type of operation Operator Example Results

In the development process, our data table generally uses the self-increment number as the ID primary key, but the ID is the numeral type, is not easy to understand. After we have converted the IDs to numbers in a certain format, it is easy to know