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PHP Math function Summary (classic worth collecting), PHP is worth collecting This paper summarizes and analyzes the mathematical operation function of PHP. Share to everyone for your reference, as follows: First, the common function

This paper summarizes and analyzes the PHP mathematical operation function. Share to everyone for your reference, specific as follows: First, the commonly used function description: Abs: Get absolute value. Acos: Gets the inverse cosine value.

PHP Function Index 967 functions A total of 967 functions Abs: Get absolute value. Acos: Gets the inverse cosine value. Ada_afetch: Gets the return column of the database. Ada_autocommit: Switch automatic change function. Ada_close: Close Adabas D

Search engine in the ocean of the Internet, the most important thing is interconnection, not by other websites cited site is "Information Island." "Good wine is also afraid of the alley deep", perhaps this word is a bit like spam ads, but the truth

Common system variables: SY-SUBRC execution statusSY-DATUM server dateSY-UZEIT server timeThe number of SY-INDEX loops (do while)Index of the inner table currently processed by the SY-TABIXSY-LINSZ current report widthSY-UNAME UsernameSY-TCODE

1 LSA IntroductionThe LSA (latent semantic analysis) Latent semantic parsing, also known as LSI (Latent semantic index), is Scott Deerwester, Susan T. A new index and retrieval method was proposed by Dumais and others in 1990. The method, like the

Original address: http://pangge.blog.51cto.com/6013757/1303893Simple IntroductionThe storage engine refers to the type of the table. The storage engine of the database determines how the table is stored on the computer. The concept of the storage

I. Arrays:1. The suffix of suffix (I) string s starting from the I character is represented as suffix (I) 2. suffix array SA: It stores an arrangement of 1 .. n SA [1], SA [2],... , SA [n], and suffix (SA [I]) 3. Ranking array Rank [I]: stores the

I. Requirements and documentation 1. Project type OA: Office automation (office automation, referred to as OA) is a modern office and computer network functions combined with a new type of office way CRM:CRM (Customer relationship Management) CRM,