PHP reads certificate information_PHP tutorial

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These are all PHP’s built-in functions

echo $_SERVER["CERT_FLAGS"]."";//Use certificate identification, 1 or 0
echo $_SERVER["CERT_ISSUER"]."";//Issuing authority
echo $_SERV R["CERT_SERIALNUMBER"]."";//Serial number
echo $_SERVER["CERT_SUBJECT"]."";//Topic
echo $_SERVER["HTTPS"]."";//https switch, on or off
echo $_SERVER["HTTPS_KEYSIZE"]."";//Key length, 128
echo $_SERVER["HTTPS_SECRETKEYSIZE"]."";//Encryption strength, 1024
echo $_SERVER["HTTPS_SERVER_ISSUER"]."";//Server Certificate Authority
echo $_SERVER["HTTPS_SERVER_SUBJECT"]."";//Server certificate subject

http://www.bkjia.com/PHPjc/445533.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/445533.htmlTechArticleThese are the built-in functions of php echo $_SERVER[CERT_FLAGS].;//Use the certificate identification, 1 or 0 echo $_SERVER[CERT_ISSUER].;//Issuing authority echo $_SERV R[CERT_SERIALNUMBER].;//Serial number echo $...