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cubrid_lob2_read

(PECL CUBRID >= 8.4.1)

cubrid_lob2_readRead from BLOB/CLOB data

Description

cubrid_lob2_read(resource $lob_identifier, int $len): string

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

Parameters

lob_identifier

Lob identifier as a result of cubrid_lob2_new() or get from the result set.

len

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

Return Values

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

Examples

Example #1 cubrid_lob2_read() 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);
?>

Example #2 cubrid_lob2_read() 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);
?>

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