oci_field_size()
(PHP 5, PHP 7, PECL OCI8 >= 1.1.0)
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。
Example #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); ?>
Note: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()。
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.