[英]Using PHP to Count Rows in MySQL Database
你們能幫我處理這段代碼嗎?我想在我的評論表中計算向下的數量,但我似乎不起作用。
$count_result = mysqli_query($con, 'SELECT COUNT(*) FROM comments WHERE id=$get_id');
羅馬試試這個:
if ($result = mysqli_query($con, "SELECT * FROM comments WHERE id=".mysqli_real_escape_string($con, $get_id))) {
$row_cnt = mysqli_num_rows($result);
printf("Result set has %d rows.\n", $row_cnt);
mysqli_free_result($result);
}
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