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mysqli_fetch_fields (PHP 5 CVS only) mysqli_fetch_fields (no version information, might be only in CVS) result->fetch_fields -- Returns an array of objects representing the fields in a result set DescriptionProcedural Style: mixed mysqli_fetch_fields ( object result) Object oriented style (method): class result { mixed fetch_fields ( int fieldnr) }
This function serves an identical purpose to the mysqli_fetch_field() function with the single difference that, instead of returning one object at a time for each field, the columns are returned as an array of objects. For a description of the attributes of each object and their meaning, see the mysqli_fetch_field() function. Return values
Returns an array of objects which contains field definition informations or FALSE if no field information is available.
Table 1. Object attributes | Attribute | Description |
|---|
| name | The name of the column | | orgname | Original column name if an alias was specified | | table | The name of the table this field belongs to (if not calculated) | | orgtable | Original table name if an alias was specified | | def | The default value for this field, represented as a string | | max_length | The maximum width of the field for the result set. | | flags | An integer representing the bit-flags for the field. | | type | The data type used for this field | | decimals | The number of decimals used (for integer fields) |
ExampleExample 1. Object oriented style <?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT Name, SurfaceArea from Country ORDER BY Code LIMIT 5";
if ($result = $mysqli->query($query)) {
/* Get field information for all columns */
$finfo = $result->fetch_fields();
for ($i=0; $i < count($finfo); $i++) {
printf("Name: %s\n", $finfo[$i]->name);
printf("Table: %s\n", $finfo[$i]->table);
printf("max. Len: %d\n", $finfo[$i]->max_length);
printf("Flags: %d\n", $finfo[$i]->flags);
printf("Type: %d\n\n", $finfo[$i]->type);
}
$result->close();
}
/* close connection */
$mysqli->close();
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Example 2. Procedural style <?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT Name, SurfaceArea from Country ORDER BY Code LIMIT 5";
if ($result = mysqli_query($link, $query)) {
/* Get field information for all columns */
$finfo = mysqli_fetch_fields($result);
for ($i=0; $i < count($finfo); $i++) {
printf("Name: %s\n", $finfo[$i]->name);
printf("Table: %s\n", $finfo[$i]->table);
printf("max. Len: %d\n", $finfo[$i]->max_length);
printf("Flags: %d\n", $finfo[$i]->flags);
printf("Type: %d\n\n", $finfo[$i]->type);
}
mysqli_free_result($result);
}
/* close connection */
mysqli_close($link);
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The above examples would produce the following output: Name: Name Table: Country max. Len: 11 Flags: 1 Type: 254 Name: SurfaceArea Table: Country max. Len: 10 Flags: 32769 Type: 4 |
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