for example:
Collection: [["1"], ["1", "2"]
excuse me, how can I convert to an array that php can use?
for example:
Collection: [["1"], ["1", "2"]
excuse me, how can I convert to an array that php can use?
php5.3 and previous versions cannot use square brackets to define arrays, but since 5.3, they can be used to define arrays, so [["1"], ["1", "2"] are all arrays after php5.3
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