This paper compares and analyzes the performance problem of random function Mt_rand () and Rand () in PHP. Share to everyone for your reference. The specific analysis is as follows:
The Mt_rand () and Rand () functions in PHP can randomly generate
Example 1. Mt_rand () example
The code is as follows
Copy Code
Echo Mt_rand (). "N";Echo Mt_rand (). "N";Echo Mt_rand (5, 15);?>The output of the example above is similar to the following:160471601414786132786
This article describes how to use the RAND () function in MySQL. It is the basic knowledge in MySQL getting started. For more information, see MySQLRAND () function calls can generate a random number between 0 and 1 :? 1234567 mysqlSELECTRAND (),
This paper compares and analyzes the performance problem of random function Mt_rand () and Rand () in PHP. Share to everyone for your reference. The specific analysis is as follows:
in PHP Mt_rand () and Rand () functions are randomly generated a
Comparison between functions rand and mt_rand in PHP. PHP functions rand and mt_randmt_rand () are four times faster than rand (). The old libc random number generator has some uncertain and unknown features and is very slow. PHP rand () functions
C + + usage of the rand () function in 2011-12-30 11:03:59| Category: c/c++| Report | font size SubscriptionOne, C + + cannot use the random () functionThe random function is not an ANSI C standard and cannot be compiled under a compiler such as
This article mainly introduces the rand () function in MySQL in the use of detailed, is the basic knowledge of MySQL primer, need friends can refer to the
The MySQL RAND () function call can produce a random number between 0 and 1:
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1
Mt_rand () is four times faster than rand (). many old libc random number generators have some uncertain and unknown features and are very slow. The rand () function of PHP uses the libc random number generator by default. The mt_rand () function is
Mt_rand () is four times times faster than Rand (), and many of the old libc random number generators have some uncertainties and unknown characteristics and are slow. The rand () function of PHP uses the libc random number generator by default. The
Mt_rand () is four times faster than rand (). many old libc random number generators have some uncertain and unknown features and are very slow. The rand () function of PHP uses the libc random number generator by default. The mt_rand () function is
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