PHP X.509 certificate (SSL) validate

Validate X.509 (SSL) certificates, implemented PHP only.

Licensed under The MIT license.

• Main Purpose

      iTune Store Receipt have Certificate(DER).  
      But PHP's openssl doesn't support Certificate Path Validation(Certificate Chain).
  
      This Library support Certificate Path Validation.
  
      e.g.
      > Root CA: /C=US/O=Apple Inc./OU=Apple Certification Authority/CN=Apple Root CA  
      > Intermidiate CA: /C=US/O=Apple Inc./OU=Apple Certification Authority/CN=Apple iTunes Store Certification Authority  
      > Leaf CA: /CN=PurchaseReceiptCertificate/OU=Apple iTunes Store/O=Apple Inc./C=US  
  
      But This Library doesn't support full validation.