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Why Does My MySQL Query Only Return One Row in My PHP Script?

Susan Sarandon
Release: 2024-11-02 14:47:03
Original
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Why Does My MySQL Query Only Return One Row in My PHP Script?

Why MySQL Returns Only One Row in PHP Script

In PHP, you may encounter an issue where a MySQL query only retrieves a single row when you expect multiple results. This discrepancy occurs when using the mysql_fetch_assoc() function incorrectly.

The provided code snippet:

$query = mysql_query("SELECT `title`, `url_title` FROM `fastsearch` WHERE `tags` LIKE '%$q%' LIMIT 5");
$query2 = mysql_fetch_assoc($quer); // Misspelling of $query
print_r($query2);
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only retrieves the first row from the query result by invoking mysql_fetch_assoc($quer) only once. To fetch all rows, you should use a loop.

The correct code using a loop:

$query = mysql_query("SELECT `title`,
                             `url_title`
                        FROM `fastsearch`
                       WHERE `tags`
                            LIKE '%$q%'
                       LIMIT 5");

while ($row = mysql_fetch_assoc($query)) {
    print_r($row);
}
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In this corrected code, note the following:

  1. The $query variable is spelled correctly.
  2. The while loop assigns each row returned by mysql_fetch_assoc($query) to the $row variable.
  3. Within the loop, you can access and print each row's data using $row.

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source:php.cn
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