mysqli_warning_count
(PHP 5)
mysqli_warning_count
(no version information, might be only in CVS)
mysqli->warning_count -- Returns the number of warnings from the last query for the given link
Description
Procedural style:
int
mysqli_warning_count ( mysqli link )
Object oriented style (property):
class
mysqli {
int warning_count
}
mysqli_warning_count() returns the number of warnings
from the last query in the connection represented by the
link parameter.
Note:
For retrieving warning messages you can use the SQL command
SHOW WARNINGS [limit row_count].
Return Values
Number of warnings or zero if there are no warnings.
Examples
Example 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(); }
$mysqli->query("CREATE TABLE myCity LIKE City");
/* a remarkable city in Wales */ $query = "INSERT INTO myCity (CountryCode, Name) VALUES('GBR', 'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch')";
$mysqli->query($query);
if ($mysqli->warning_count) { if ($result = $mysqli->query("SHOW WARNINGS")) { $row = $result->fetch_row(); printf("%s (%d): %s\n", $row[0], $row[1], $row[2]); $result->close(); } }
/* close connection */ $mysqli->close(); ?>
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Example 2. Procedural style
<?php $link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); }
mysqli_query($link, "CREATE TABLE myCity LIKE City");
/* a remarkable long city name in Wales */ $query = "INSERT INTO myCity (CountryCode, Name) VALUES('GBR', 'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch')";
mysqli_query($link, $query);
if (mysqli_warning_count($link)) { if ($result = mysqli_query($link, "SHOW WARNINGS")) { $row = mysqli_fetch_row($result); printf("%s (%d): %s\n", $row[0], $row[1], $row[2]); mysqli_free_result($result); } }
/* close connection */ mysqli_close($link); ?>
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The above example will output:
Warning (1264): Data truncated for column 'Name' at row 1 |