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Can I Loop Through a MySQL Result Set Multiple Times without Re-executing the Query?

Susan Sarandon
Release: 2024-11-10 18:28:02
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Can I Loop Through a MySQL Result Set Multiple Times without Re-executing the Query?

Looping Through a MySQL Result Set Multiple Times with mysql_* Functions

Q. For specific instances, looping through a MySQL result set multiple times is necessary. Is there a way to achieve this without executing the query repeatedly or resorting to storing and reusing rows elsewhere in the script?

A. To loop through a MySQL result set more than once using the mysql_* functions, you can utilize the following approach:

$result = mysql_query(/* Your query */);
while ($row = mysql_fetch_assoc($result)) {
    // Perform desired actions on the row
}

// Reset the result pointer to the beginning
mysql_data_seek($result, 0);

while ($row = mysql_fetch_assoc($result)) {
    // Perform desired actions on the row again
}
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By employing this method, you effectively set the result pointer back to the first row after completing the initial loop, allowing you to iterate through the result set multiple times.

However, it's worth noting that this approach may not be the most ideal solution. Consider performing the desired processing within the first loop to avoid the need for multiple iterations through the result set.

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