maxdb_field_count(3) [php man page]
MAXDB_FIELD_COUNT(3) 1 MAXDB_FIELD_COUNT(3) maxdb_field_count - Returns the number of columns for the most recent query Procedural style SYNOPSIS
int maxdb_field_count (resource $link) DESCRIPTION
Object oriented style int maxdb::field_count (void ) Returns the number of columns for the most recent query on the connection represented by the $link parameter. This function can be useful when using the maxdb_store_result(3) function to determine if the query should have produced a non-empty result set or not without knowing the nature of the query. RETURN VALUES
An integer representing the number of fields in a result set. EXAMPLES
Example #1 Object oriented style <?php $maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB"); maxdb_report (MAXDB_REPORT_OFF); $maxdb->query("DROP TABLE friends"); maxdb_report (MAXDB_REPORT_ERROR); $maxdb->query( "CREATE TABLE friends (id int, name varchar(20))"); $maxdb->query( "INSERT INTO friends VALUES (1,'Hartmut')"); $maxdb->query( "INSERT INTO friends VALUES (2, 'Ulf')"); if ($maxdb->field_count()) { /* this was a select/show or describe query */ $result = $maxdb->store_result(); /* process resultset */ $row = $result->fetch_row(); /* free resultset */ $result->close(); } /* close connection */ $maxdb->close(); ?> Example #2 Procedural style <?php $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB"); maxdb_report (MAXDB_REPORT_OFF); maxdb_query($link,"DROP TABLE friends"); maxdb_report (MAXDB_REPORT_ERROR); maxdb_query($link, "CREATE TABLE friends (id int, name varchar(20))"); maxdb_query($link, "INSERT INTO friends VALUES (1,'Hartmut')"); maxdb_query($link, "INSERT INTO friends VALUES (2, 'Ulf')"); if (maxdb_field_count($link)) { /* this was a select/show or describe query */ $result = maxdb_store_result($link); /* process resultset */ $row = maxdb_fetch_row($result); /* free resultset */ maxdb_free_result($result); } /* close connection */ maxdb_close($link); ?> The above example produces no output. PHP Documentation Group MAXDB_FIELD_COUNT(3)
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MYSQLI_FIELD_COUNT(3) 1 MYSQLI_FIELD_COUNT(3) mysqli::$field_count - Returns the number of columns for the most recent query Object oriented style SYNOPSIS
int$mysqli->field_count () DESCRIPTION
Procedural style int mysqli_field_count (mysqli $link) Returns the number of columns for the most recent query on the connection represented by the $link parameter. This function can be useful when using the mysqli_store_result(3) function to determine if the query should have produced a non-empty result set or not without knowing the nature of the query. PARAMETERS
o $ link -Procedural style only: A link identifier returned by mysqli_connect(3) or mysqli_init(3) RETURN VALUES
An integer representing the number of fields in a result set. EXAMPLES
Example #1 $mysqli->field_count example Object oriented style <?php $mysqli = new mysqli("localhost", "my_user", "my_password", "test"); $mysqli->query( "DROP TABLE IF EXISTS friends"); $mysqli->query( "CREATE TABLE friends (id int, name varchar(20))"); $mysqli->query( "INSERT INTO friends VALUES (1,'Hartmut'), (2, 'Ulf')"); $mysqli->real_query("SELECT * FROM friends"); if ($mysqli->field_count) { /* this was a select/show or describe query */ $result = $mysqli->store_result(); /* process resultset */ $row = $result->fetch_row(); /* free resultset */ $result->close(); } /* close connection */ $mysqli->close(); ?> Procedural style <?php $link = mysqli_connect("localhost", "my_user", "my_password", "test"); mysqli_query($link, "DROP TABLE IF EXISTS friends"); mysqli_query($link, "CREATE TABLE friends (id int, name varchar(20))"); mysqli_query($link, "INSERT INTO friends VALUES (1,'Hartmut'), (2, 'Ulf')"); mysqli_real_query($link, "SELECT * FROM friends"); if (mysqli_field_count($link)) { /* this was a select/show or describe query */ $result = mysqli_store_result($link); /* process resultset */ $row = mysqli_fetch_row($result); /* free resultset */ mysqli_free_result($result); } /* close connection */ mysqli_close($link); ?> PHP Documentation Group MYSQLI_FIELD_COUNT(3)