cubrid_lob2_read

cubrid_lob2_read

Read from BLOB/CLOB data

string **cubrid_lob2_read** resource $lob_identifier int $len

The function reads bytes from the LOB data and returns the bytes read. cubrid_lob2_read``len

lob_identifierLob identifier as a result of or get from the result set.cubrid_lob2_new

lenLength from buffer you want to read from the lob data.

Returns the contents as a string, false when there is no more data, or null on failure.

Voorbeeld: example 1

<?php
// test_lob (id INT, contents CLOB)

$conn = cubrid_connect("localhost", 33000, "demodb", "public", "");

$req = cubrid_execute($conn, "select * from test_lob");

$row = cubrid_fetch_row($req, CUBRID_LOB);

print "position now is " . cubrid_lob2_tell($row[1]) . "\n";

cubrid_lob2_seek($row[1], 10, CUBRID_CURSOR_FIRST);

print "\nposition after moving farword is " . cubrid_lob2_tell($row[1]) . "\n";

$data = cubrid_lob2_read($row[1], 12);

print "\nposition after reading is " . cubrid_lob2_tell($row[1]) . "\n";

print $data . "\n";

cubrid_lob2_seek($row[1], 5, CUBRID_CURSOR_CURRENT);

print "\nposition after moving again is " . cubrid_lob2_tell($row[1]) . "\n";

$data = cubrid_lob2_read($row[1], 20);
print $data . "\n";

cubrid_disconnect($conn);
?>

Voorbeeld: example 2

<?php
// test_lob (id INT, contents CLOB)

$conn = cubrid_connect("localhost", 33000, "demodb", "dba", "");

$req = cubrid_execute($conn, "select * from test_lob");

$row = cubrid_fetch_row($req, CUBRID_LOB);

while (true) {
    if ($data = cubrid_lob2_read($row[1], 1024)) {
        print $data . "\n";
    }
    elseif ($data === false) {
        print "There is no more data\n";
        break;
    }
    else {
        print "There must some errors\n";
        break;
    }
}

cubrid_disconnect($conn);
?>

cubrid_lob2_write``cubrid_lob2_seek``cubrid_lob2_seek64``cubrid_lob2_tell``cubrid_lob2_tell64``cubrid_lob2_size``cubrid_lob2_size64