my mysql database has two pieces of data

when I print_r, it looks like this:

[{"errno":"1","errstr":"2","errfile":"3","errline":"4"},{"errno":"12","errstr":"2123 ","errfile":"3123","errline":"4124"}]1

I want him to cycle through a list of
, but I just can"t print it. Where is the code code for
?
foreach is completely invalid