Code Inspection: Invalid string offset usage
Reports invalid string offset usages that will result in a runtime error.
The following usages are reported:
Using string offsets as objects or arrays
Unsetting string offsets via
Passing string offsets by reference
Creating references to or from string offsets
Incrementing or decrementing string offsets
Using combined operator assignments such as
.=on string offsets
Assigning string offsets with empty strings or strings with length >1
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