[Description] When verifying a message, certificates (if any) included in the message are normally searched for the signing certificate. With this option only the certificates specified in the extracerts parameter of openssl_pkcs7_verify() are used. The supplied certificates can still be used as untrusted CAs however. [Constant] 
PKCS7_NOINTERN
P K C S 7 _ T E X T
P K C S 7 _ B I N A R Y
P K C S 7 _ N O I N T E R N
P K C S 7 _ N O V E R I F Y
P K C S 7 _ N O C H A I N
P K C S 7 _ N O C E R T S
P K C S 7 _ N O A T T R
P K C S 7 _ D E T A C H E D
P K C S 7 _ N O S I G S