ibase_num_fields
(PHP 5, PHP 7)
ibase_num_fields - 获取结果集中的字段数
描述
int ibase_num_fields ( resource $result_id )获取结果集中的字段数。
参数
result_id
一个InterBase结果标识符。
返回值
以整数形式返回字段的数量。
例子
示例＃1 ibase_num_fields（）示例
<?php
$rs = ibase_query("SELECT * FROM tablename");
$coln = ibase_num_fields($rs);
for ($i = 0; $i < $coln; $i++) {
$col_info = ibase_field_info($rs, $i);
echo "name: " . $col_info['name'] . "\n";
echo "alias: " . $col_info['alias'] . "\n";
echo "relation: " . $col_info['relation'] . "\n";
echo "length: " . $col_info['length'] . "\n";
echo "type: " . $col_info['type'] . "\n";
}
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