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Explanation of id=%d for SQL query statements in PHP
- 巴扎黑Original
- 2016-12-22 14:41:041718browse
Some of the SQL statements are written like this:
'SELECT id FROM dbname WHERE xx_id = %d;', $bl['student_id']
"xx_id = %d", where %d refers to taking a decimal number (d means decimal) , the content of the decimal number is the following $bl['student_id'].
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