What method can be used to decrypt this string?

Question

PHP

Good day! Tell me, what method is this string encrypted with and can it be decrypted?

QxscGkJyClJxbg1SRXIFAB5cCBVAeVdEGVlkSU4PYx8vPW
U1NF5OUkIyYTIiIlAtBCMARhE1WwEGKVBzH1MqFk0jPnE * DAN7AHJiXS
gHCyl4D1UMXCYSHBUJBzcTLlxEACw2IFwebXkFJFkAIXp1AyIgST8UHF4
hJSQsRgwATT8dJndXIRE / K34UNgEEf2U2FnoccSIkV1ILClwvAHI2BU5ZdxI
gLBxwCRMcFkciAlRCCEAsKn1JUhY0Sw0xMlpaJnYzUR8cdAEbeHpEPDRhB
WIAKVJDD18AQVl8ZwFwETcVN1wuUSsPfWwmbyRDEFVXQCMHNlNDFksH
GQAKJwF9eRMMYTcFHEgiDQ8KAgkIeD8xEVZVNk4oHVpaMgIwPGQVGBgG
REkpYQN2M3QaChgzeBIaVxsGM3pxDhIIIm0WM0o4AUsKG1ofBxcAfR8hAlA
oDhsnBhBCcDJHNUtJIDIXBE0iLF8kC2J2Inx9Yj8FWTEZGXcSKBgkCnEVTgQla
3sdFAcjPx1DLwEEPQk3XEdhchlyQlwQFnAyXAslYGkGWkU / I3d9MBElB1AKC
H41fR52RQ94QEI5X1IDEg4bJzEpWEJCfUJBLQRgOSoHGxgKMGI2AHolJU5tXk
cuA1MYDAkbRiMNcUk4ZEcGa0ZAC0sdHEsVHGsiHUV3KmFfRhEWUlEnHXQh
EREBfVcXeSMWCVZwOy1lHm8mcHIkA3gGBUZKZg--

Answer 1

As correctly noted above, it looks like base64, but the ending "--" suggests a non-standard alphabet. The most reliable way is to find the script it uses/creates and look into it.

Answer 2

If this string hash, then not how