Here is a simple example for using pg_num_feilds, pg_num_rows and pg_result together. I'm simply SELECTing * from a table named markie on the current pg_connect().
<?php
$pgsql_conn = pg_connect("dbname=mark host=localhost");
if (!$pgsql_conn) {
print pg_last_error($pgsql_conn);
exit;
}
$results = pg_query($pgsql_conn, "SELECT * FROM markie");
echo "<table border=1>\n";
for($lt = 0; $lt < pg_num_rows($results); $lt++) {
echo "<tr>\n";
for($gt = 0; $gt < pg_num_fields($results); $gt++) {
echo "<td>" . pg_result($results, $lt, $gt) . "</td>\n";
}
echo "</tr>\n";
}
echo "</table>\n";
pg_close($pgsql_conn);
?>
This code snippet will print out the rows and columns into a HTML table.
Regards, --mark
pg_num_fields
(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
pg_num_fields — 返回结果中字段的数量
返回值
结果中的字段（列）的数量。错误时返回 -1。
更新日志
| 版本 | 说明 |
|---|---|
| 8.1.0 |
现在 result 参数接受 PgSql\Result
实例，之前接受 resource。
|
示例
示例 #1 pg_num_fields() 示例
<?php
$result = pg_query($conn, "SELECT 1, 2");
$num = pg_num_fields($result);
echo $num . " field(s) returned.\n";
?>以上示例会输出：
2 field(s) returned.
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User Contributed Notes 1 note
mark at redbrick dot dcu dot ie ¶
21 years ago
