execute scalar for php

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retrieve only one value from the query

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  1. function execute_scalar($sql,$def="") {
  2. $rs = mysql_query($sql) or die(mysql_error().$sql);
  3. if (mysql_num_rows($rs)) {
  4. $r = mysql_fetch_row($rs);
  5. return $r[0];
  6. }
  7. return $def;
  8. }

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