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PHP : Function Reference : PostgreSQL Functions : pg_num_fields

pg_num_fields

Returns the number of fields in a result (PHP 4 >= 4.2.0, PHP 5)
int pg_num_fields ( resource result )

Example 1955. pg_num_fields() example

<?php
$result
= pg_query($conn, "SELECT 1, 2");

$num = pg_num_fields($result);

echo
$num . " field(s) returned.\n";
?>

The above example will output:

2 field(s) returned.

Code Examples / Notes » pg_num_fields

mark

Here is a simple example for using pg_num_feilds, pg_num_rows and pg_result together.  I'm simply SELECTing * from a table named markie on the current pg_connect().  
<?php
   $pgsql_conn = pg_connect("dbname=mark host=localhost");
   if (!$pgsql_conn) {
       print pg_last_error($pgsql_conn);
       exit;
   }
   $results = pg_query($pgsql_conn, "SELECT * FROM markie");
   echo "<table border=1>\n";
   for($lt = 0; $lt < pg_num_rows($results); $lt++) {
       echo "<tr>\n";
       for($gt = 0; $gt < pg_num_fields($results); $gt++) {
           echo "<td>" . pg_result($results, $lt, $gt) . "</td>\n";
       }
       echo "</tr>\n";
   }
   echo "</table>\n";
   pg_close($pgsql_conn);
?>
This code snippet will print out the rows and columns into a HTML table.
Regards,  --mark


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pg_field_is_null
pg_field_name
pg_field_num
pg_field_prtlen
pg_field_size
pg_field_table
pg_field_type_oid
pg_field_type
pg_free_result
pg_get_notify
pg_get_pid
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pg_host
pg_insert
pg_last_error
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pg_lo_close
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pg_lo_open
pg_lo_read_all
pg_lo_read
pg_lo_seek
pg_lo_tell
pg_lo_unlink
pg_lo_write
pg_meta_data
pg_num_fields
pg_num_rows
pg_options
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pg_prepare
pg_put_line
pg_query_params
pg_query
pg_result_error_field
pg_result_error
pg_result_seek
pg_result_status
pg_select
pg_send_execute
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pg_send_query_params
pg_send_query
pg_set_client_encoding
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pg_trace
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