mysql_fetch_array will give me an array of a fetched row. What's the best way generate an array from the values of all rows in one column?
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12 Answers
you could loop through the array, and create a new one, like so:
$column = array();
while($row = mysql_fetch_array($info)){
$column[] = $row[$key];
//Edited - added semicolon at the End of line.1st and 4th(prev) line
}
Comments
There is no function to do this using the mysql extension, you can do this:
$result = array();
while ($row = mysql_fetch_array($r, MYSQL_NUM)) {
$result[] = $row[0];
}
It is apparently marginally faster to fetch the columns in a numerically indexed array, and there is no real benefit here to having the associative array format.
Comments
Use a while loop to get the records and store them in an array:
$array = array();
while ($row = mysql_fetch_array()) {
$array[] = $row['column-x'];
}
Comments
Loop through the result:
$result = mysql_query(...);
$data = array();
while ($row = mysql_fetch_array($result)) {
array_push($data, $row["columnyouwant"]);
}
Comments
$result = mysql_query("SELECT columnname FROM table WHERE x=y");
$columnValues = Array();
while ( $row = mysql_fetch_assoc($result) ) {
$columnValues[] = $row['columnname'];
}
Comments
If none of the above work, try:
while( $row = mysqli_fetch_assoc( $result)){
$array[] = $row['id'];
}
mysql_fetch_assoc is deprecated.
Comments
If you use PDO instead of php-mysql the return value of PDO::query() implements the Traversable interface, meaning you can use it e.g. with foreach() (unlike the mysql result resource you get from mysql_query).
foreach( $pdo->query('SELECT x,y,z FROM foo') as $row ) {
And in case this does not suffice and you really, really need an array (i.e. get_class($x)==='Array'), there's the fetchAll() method.
Comments
// I'm using this for years and it works very good !! it's easy and logic
$translate = array();
while ($row = mysql_fetch_assoc($result))
{
$columnkey = $row['translshort']; // is what you want the key to be
$translate[$columnkey] = $row[$language]; // this is the key and the value in the array
}
Comments
Many years later, just another way. I don't know if its performance is better or worse than the while loop method.
For values without commas yo can do:
$res = mysql_query("SELECT GROUP_CONCAT(colname) AS values FROM tablename");
$row = mysql_fetch_assoc($res);
$arrOfValues = explode(',', $row['values']);
For a generic solution, you may use a separator:
$res = mysql_query("SELECT GROUP_CONCAT(colname SEPARATOR '##_sep_##') AS values FROM tablename");
$row = mysql_fetch_assoc($res);
$arrOfValues = explode('##_sep_##', $row['values']);
Comments
$query = mysql_query('SELECT * from yourTable');
function mysql_field_array( $query ) {
$field = mysql_num_fields( $query );
for ( $i = 0; $i < $field; $i++ ) {
$names[] = mysql_field_name( $query, $i );
}
return $names;
}
$fields = mysql_field_array( $query );
$output = implode( ',', $fields ); //outputs the columns names
//echo count( $fields ); //this use if you want count of columns.
$columns = '{\"fields\":\".json_encode($output).\"}';
echo $columns; //for JSON output
Comments
you can do this :
$columns = array();
$i=1;
while( $row = mysql_fetch_array($sql) )
{
$columns [$i]=$row['value'];
$i++;
}
Comments
If you don't need other information in that table, you can query for only the column you need and it makes it all more easy:
$query = mysql_query("SELECT * FROM table WHERE id='$int' LIMIT 1");
$column = array();
$column = mysql_fetch_array($query);
