oci_field_size

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

oci_field_size — 返回字段大小

说明

oci_field_size(resource $stmt, mixed $field): int

oci_field_size() 以字节为单位返回字段的大小。field 参数的值可以是字段的索引（从 1 开始）或者字段名。

示例 #1 oci_field_size()例子


<?php
    $conn = oci_connect("scott", "tiger");
    $stmt = oci_parse($conn, "SELECT * FROM emp");
    oci_execute($stmt);

    echo "<table border=\"1\">";
    echo "<tr>";
    echo "<th>Name</th>";
    echo "<th>Type</th>";
    echo "<th>Length</th>";
    echo "</tr>";

    $ncols = oci_num_fields($stmt);

    for ($i = 1; $i <= $ncols; $i++) {
        $column_name  = oci_field_name($stmt, $i);
        $column_type  = oci_field_type($stmt, $i);
        $column_size  = oci_field_size($stmt, $i);
        echo "<tr>";
        echo "<td>$column_name</td>";
        echo "<td>$column_type</td>";
        echo "<td>$column_size</td>";
        echo "</tr>";
    }

    echo "</table>";

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

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

参见 oci_num_fields() 和 oci_field_name()。

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User Contributed Notes 1 note

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rudi at darx dot com ¶

22 years ago


Just a note regarding the size of Oracle  NUMBERS will always return 22 as their "size".



This seems to be an Oracle feature. The rest of the documentation is in bug5156.

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