Php version processing class

: This article mainly introduces the php version processing class. if you are interested in the PHP Tutorial, you can refer to it. Php version processing class

For example, to record the app version or some version data, if you use a version format such as 1.0.0 to record the database, it will be troublesome to filter and query the data.
By converting the version string into a number, you can easily compare and filter versions.

For example, to query versions between 3.0.1 and 10.0.1, because 3.0.1 is larger than 10.0.1 (string comparison), you need to process it before querying.
However, it is convenient to convert 3.0.1 and 10.0.1 into numbers 30001 and 100001 to compare queries.

Version. class. php

  Check ($ version) {list ($ major, $ minor, $ sub) = explode ('. ', $ version); $ integer_version = $ major * 10000 + $ minor * 100 + $ sub; return intval ($ integer_version );} else {thrownew ErrorException ('version Validate error ');}} /*** convert the number to version * @ param Int $ version_code indicates * @ return String */publicfunctioninteger_to_version ($ version_code) {if (is_numeric ($ version_code) & $ version_code> = 10000) {$ version = Array (); $ version [0] = (int) ($ version_code/10000); $ version [1] = (int) ($ version_code % 10000/100 ); $ version [2] = $ version_code %100; return implode ('. ', $ version);} else {thrownew ErrorException ('version code Validate error ');}} /*** check whether the version format is correct * @ param String $ version * @ return Boolean */publicfunctioncheck ($ version) {$ ret = preg_match ('/^ [0-9] {1, 3 }\. [0-9] {1, 2 }\. [0-9] {1, 2} $/', $ version); return $ Ret? True: false;}/*** compares the values of two versions * @ param String $ version1 version 1 * @ param String $ version2 version 2 * @ return Int-<2, 0: equal, 1:1> 2 */publicfunctioncompare ($ version1, $ version2) {if ($ this-> check ($ version1) & $ this-> check ($ version2) {$ version1_code = $ this-> version_to_integer ($ version1); $ version2_code = $ this-> version_to_integer ($ version2 ); if ($ version1_code> $ version2_code) {return1;} elseif ($ version1_c Ode <$ version2_code) {return-1 ;}else {return0 ;}} else {thrownew ErrorException ('version1 or version2 Validate error') ;}}// class end?>

Demo. php

  Version_to_integer ($ version); echo $ version_code .'
'; // 20701 // number to version $ version = $ obj-> integer_to_version ($ version_code); echo $ version .'
'; // 2.7.1 // check the version $ version =' 1. 1. a'; var_dump ($ obj-> check ($ version); // false // compare two versions $ version1 = '2. 9.9 '; $ version2 = '10. 0.1 '; $ result = $ obj-> compare ($ version1, $ version2); echo $ result; //-1?>

Source code: Click to view

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The above introduces the php version processing class, including some content, and hope to be helpful to friends who are interested in the PHP Tutorial.