pg_lo_tell()

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

返回大型对象的当前指针位置

说明

pg_lo_tell(resource $large_object): int

pg_lo_tell()返回当前指针位置（大型对象中从头开始的偏移量）。

参见pg_lo_seek()。

Function to take a large object size:
<?php
function pg_lo_size ($lo) {
 $pos = pg_lo_tell ($lo);
 pg_lo_seek ($lo, 0, PGSQL_SEEK_END);
 $size = pg_lo_tell ($lo);
 pg_lo_seek ($lo, $pos, PGSQL_SEEK_SET);
 return $size;
}
?>