oci_num_fields

(PHP 5, PHP 7, PHP 8, PECL OCI8 >= 1.1.0)

oci_num_fields返回结果列的数目

说明

oci_num_fields(resource $statement): int

oci_num_fields() 返回 statement 中的列的数目。

示例 #1 oci_num_fields() 例子

<?php
echo "<pre>\n";
$conn = oci_connect("scott", "tiger");
$stmt = oci_parse($conn, "select * from emp");

oci_execute($stmt);

while (
oci_fetch($stmt)) {
echo
"\n";
$ncols = oci_num_fields($stmt);
for (
$i = 1; $i <= $ncols; $i++) {
$column_name = oci_field_name($stmt, $i);
$column_value = oci_result($stmt, $i);
echo
$column_name . ': ' . $column_value . "\n";
}
echo
"\n";
}

oci_free_statement($stmt);
oci_close($conn);

echo
"</pre>";
?>

oci_num_fields() 在出错时返回 false

注意:

在 PHP 5.0.0 之前的版本必须使用 ocinumcols() 替代本函数。该函数名仍然可用,为向下兼容作为 oci_num_fields() 的别名。不过其已被废弃,不推荐使用。

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