fdf_next_field_name
(PHP 4, PHP 5, PHP 7)
fdf_next_field_name — Get the next field name
说明
fdf_next_field_name
( resource
$fdf_document
[, string $fieldname
] ) : stringGets the name of the field after the given field. This name can be used with several functions.
参数
-
fdf_document -
The FDF document handle, returned by fdf_create(), fdf_open() or fdf_open_string().
-
fieldname -
Name of the FDF field, as a string. If not given, the first field will be assumed.
返回值
Returns the field name as a string.
范例
Example #1 Detecting all fieldnames in a FDF
<?php
$fdf = fdf_open($HTTP_FDF_DATA);
for ($field = fdf_next_field_name($fdf);
$field != "";
$field = fdf_next_field_name($fdf, $field)) {
echo "field: $field\n";
}
?>