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TINYTEXT 最大長度是 255 (2^8 - 1) 個字符，也就是1KB TEXT 最大長度是 65535 (2^16 - 1) 個字符，也就是64KB MEDIUMTEXT 最大長... |
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通過設立緩存的方式解決 |
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感謝大家對阿斯蘭侃吧的支持！ |
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$sql = "SELECT NULL, ''"; $row = get_result_row($sql); echo (int)is_null($row[0]); //1 echo... |
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