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ifx_affected_rows

ifx_affected_rows

(PHP 4, PHP <=5.2.0)

ifx_affected_rowsGet number of rows affected by a query

说明

int ifx_affected_rows ( resource $result_id )

Returns the number of rows affected by a query associated with result_id.

For inserts, updates and deletes the number is the real number (sqlerrd[2]) of affected rows. For selects it is an estimate (sqlerrd[0]). Don't rely on it. The database server can never return the actual number of rows that will be returned by a SELECT because it has not even begun fetching them at this stage (just after the "PREPARE" when the optimizer has determined the query plan).

Useful after ifx_prepare() to limit queries to reasonable result sets.

参数

result_id

A valid result id returned by ifx_query() or ifx_prepare().

返回值

Returns the number of rows as an integer.

范例

Example #1 Informix affected rows

<?php
$rid 
ifx_prepare("select * from emp
                     where name like " 
$name$connid);
if (! 
$rid) {
    

}
$rowcount ifx_affected_rows($rid);
if (
$rowcount 1000) {
    
printf ("Too many rows in result set (%d) <br />"$rowcount);
    die (
"Please restrict your query<br /> ");
}
?>

参见


  • ifxus_close_slob
  • ifxus_create_slob
  • ifxus_free_slob
  • ifxus_open_slob
  • ifxus_read_slob
  • ifxus_seek_slob
  • ifxus_tell_slob
  • ifxus_write_slob
  • ifx_affected_rows
  • ifx_blobinfile_mode
  • ifx_byteasvarchar
  • ifx_close
  • ifx_connect
  • ifx_copy_blob
  • ifx_create_blob
  • ifx_create_char
  • ifx_do
  • ifx_error
  • ifx_errormsg
  • ifx_fetch_row
  • ifx_fieldproperties
  • ifx_fieldtypes
  • ifx_free_blob
  • ifx_free_char
  • ifx_free_result
  • ifx_getsqlca
  • ifx_get_blob
  • ifx_get_char
  • ifx_htmltbl_result
  • ifx_nullformat
  • ifx_num_fields
  • ifx_num_rows
  • ifx_pconnect
  • ifx_prepare
  • ifx_query
  • ifx_textasvarchar
  • ifx_update_blob
  • ifx_update_char
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