Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Make a string uppercase
strtoupper(string $string): string
            'issuer' => new EnumStub(array_intersect_key($info['issuer'], ['organizationName' => true'commonName' => true])),

            
'expiry' => new ConstStub(date(\DateTime::ISO8601$info['validTo_time_t']), $info['validTo_time_t']),

            
'fingerprint' => new EnumStub([

                
'md5' => new ConstStub(wordwrap(strtoupper(openssl_x509_fingerprint($h'md5')), 2':'true)),

                
'sha1' => new ConstStub(wordwrap(strtoupper(openssl_x509_fingerprint($h'sha1')), 2':'true)),

                
'sha256' => new ConstStub(wordwrap(strtoupper(openssl_x509_fingerprint($h'sha256')), 2':'true)),

                
'pin-sha256' => new ConstStub($pin),
            'expiry' => new ConstStub(date(\DateTime::ISO8601$info['validTo_time_t']), $info['validTo_time_t']),

            
'fingerprint' => new EnumStub([

                
'md5' => new ConstStub(wordwrap(strtoupper(openssl_x509_fingerprint($h'md5')), 2':'true)),

                
'sha1' => new ConstStub(wordwrap(strtoupper(openssl_x509_fingerprint($h'sha1')), 2':'true)),

                
'sha256' => new ConstStub(wordwrap(strtoupper(openssl_x509_fingerprint($h'sha256')), 2':'true)),

                
'pin-sha256' => new ConstStub($pin),

            ]),
            'fingerprint' => new EnumStub([

                
'md5' => new ConstStub(wordwrap(strtoupper(openssl_x509_fingerprint($h'md5')), 2':'true)),

                
'sha1' => new ConstStub(wordwrap(strtoupper(openssl_x509_fingerprint($h'sha1')), 2':'true)),

                
'sha256' => new ConstStub(wordwrap(strtoupper(openssl_x509_fingerprint($h'sha256')), 2':'true)),

                
'pin-sha256' => new ConstStub($pin),

            ]),

        ];
    {

        
$prev $this->charset;



        
$charset strtoupper($charset);

        
$charset null === $charset || 'UTF-8' === $charset || 'UTF8' === $charset 'CP1252' $charset;



        
$this->charset $charset;