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maxdb_num_fields(PECL) maxdb_num_fields (no version information, might be only in CVS) result->field_count --
Get the number of fields in a result
DescriptionProcedural style: int maxdb_num_fields ( resource result ) Object oriented style (property): class result { int field_count }
maxdb_num_fields() returns the number of fields from specified result set.
Возвращаемые значенияThe number of fields from a result set ExampleПример 1. Object oriented style
<?php $maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s\n", maxdb_connect_error()); exit(); }
if ($result = $maxdb->query("SELECT * FROM hotel.city ORDER BY zip")) {
/* determine number of fields in result set */ $field_cnt = $result->field_count;
printf("Result set has %d fields.\n", $field_cnt);
/* close result set */ $result->close(); }
/* close connection */ $maxdb->close(); ?>
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Пример 2. Procedural style
<?php $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s\n", maxdb_connect_error()); exit(); }
if ($result = maxdb_query($link, "SELECT * FROM hotel.city ORDER BY zip")) {
/* determine number of fields in result set */ $field_cnt = maxdb_num_fields($result);
printf("Result set has %d fields.\n", $field_cnt);
/* close result set */ maxdb_free_result($result); }
/* close connection */ maxdb_close($link); ?>
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The above examples would produce the following output:
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