Example
Return the length of the fields in the result set:
<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$sql="SELECT * FROM Persons ORDER BY Lastname";
if ($result=mysqli_query($con,$sql))
{
$row=mysqli_fetch_row($result);
// Display field lengths
foreach (mysqli_fetch_lengths($result) as $i=>$val)
{
printf("Field %2d has length: %2d\n",$i+1,$val);
}
// Free result
set
mysqli_free_result($result);
}
mysqli_close($con);
?>
Definition and Usage
The mysqli_fetch_lengths() function returns the length of the fields in the result set.
Syntax
mysqli_fetch_lengths(result);
| Parameter | Description |
|---|---|
| result | Required. Specifies a result set identifier returned by mysqli_query() , mysqli_store_result() or mysqli_use_result() |
Technical Details
| Return Value: | Returns an array if integer that represents the size of each field (column). FALSE if an error occurs |
|---|---|
| PHP Version: | 5+ |
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