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Why did my teacher prompt me that the array index is undefined?
紫龙
2019-01-11 14:13:03
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Undefined array index: is_update
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紫龙
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Peter-Zhu
2019-01-24 11:23:15
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I haven’t seen your code, how do I know you defined this array?
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I haven’t seen your code, how do I know you defined this array?