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最新推荐文章于 2023-12-12 10:15:39 发布

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本文介绍了一个PHP函数，用于解析OpenSSL版本号为更易读的格式。此函数能够将十六进制形式的版本号转换成主要、次要、修复及补丁版本的组合，并支持文本比较或使用version_compare()函数。

// OPENSSL_VERSION_NUMBER parser, works from OpenSSL v.0.9.5b+ (e.g. for use with version_compare())

// OPENSSL_VERSION_NUMBER is a numeric release version identifier for OpenSSL

// Syntax: MNNFFPPS: major minor fix patch status (HEX)

// The status nibble meaning: 0 => development, 1 to e => betas, f => release

// Examples:

// - 0x000906023 => 0.9.6b beta 3

// - 0x00090605f => 0.9.6e release

// - 0x1000103f => 1.0.1c

/**

* @param OpenSSL version identifier as hex value $openssl_version_number

function get_openssl_version_number($patch_as_number=false,$openssl_version_number=null) {

if (is_null($openssl_version_number)) $openssl_version_number = OPENSSL_VERSION_NUMBER;

$openssl_numeric_identifier = str_pad((string)dechex($openssl_version_number),8,'0',STR_PAD_LEFT);

$openssl_version_parsed = array();

$preg = '/(?[[:xdigit:]])(?[[:xdigit:]][[:xdigit:]])(?[[:xdigit:]][[:xdigit:]])';

$preg.= '(?[[:xdigit:]][[:xdigit:]])(?[[:xdigit:]])/';

preg_match_all($preg, $openssl_numeric_identifier, $openssl_version_parsed);

$openssl_version = false;

if (!empty($openssl_version_parsed)) {

$alphabet = array(1=>'a',2=>'b',3=>'c',4=>'d',5=>'e',6=>'f',7=>'g',8=>'h',9=>'i',10=>'j',11=>'k',12=>'l',13=>'m',

14=>'n',15=>'o',16=>'p',17=>'q',18=>'r',19=>'s',20=>'t',21=>'u',22=>'v',23=>'w',24=>'x',25=>'y',26=>'z');

$openssl_version = intval($openssl_version_parsed['major'][0]).'.';

$openssl_version.= intval($openssl_version_parsed['minor'][0]).'.';

$openssl_version.= intval($openssl_version_parsed['fix'][0]);

if (!$patch_as_number && array_key_exists(intval($openssl_version_parsed['patch'][0]), $alphabet)) {

$openssl_version.= $alphabet[intval($openssl_version_parsed['patch'][0])]; // ideal for text comparison

}

else {

$openssl_version.= '.'.intval($openssl_version_parsed['patch'][0]); // ideal for version_compare

}

return $openssl_version;

}