Predefined Constants
Padding flags
Predefined Constants
PHP Manual

## Purpose checking flags

`X509_PURPOSE_SSL_CLIENT` ( integer )
`X509_PURPOSE_SSL_SERVER` ( integer )
`X509_PURPOSE_NS_SSL_SERVER` ( integer )
`X509_PURPOSE_SMIME_SIGN` ( integer )
`X509_PURPOSE_SMIME_ENCRYPT` ( integer )
`X509_PURPOSE_CRL_SIGN` ( integer )
`X509_PURPOSE_ANY` ( integer )

Predefined Constants
Padding flags
Predefined Constants
PHP Manual