本文介绍了如何在PHP中使用PDFlib TET提取PDF中的文本：

/* 全局参数表*/

$globaloptlist = "searchpath=../../../resource/cmap";

/* 文档参数表 */

$docoptlist = "";

/* 页面参数表 */

$pageoptlist = "granularity=page";

$infile = $_GET['infile'];

/* 将提取出的文本以UTF-8 编码传送的浏览器 */

header("Content-type: text/html; charset=UTF-8");

print("

");

$tet = TET_new();

if ($infile == "")

{

die("usage: add ?infile=filename.pdf to the URL/n");

}

TET_set_option($tet, $globaloptlist);

$doc = TET_open_document($tet, $infile, $docoptlist);

if ($doc == -1)

{

die("Error ". TET_get_errnum($tet) . " in " . TET_get_apiname($tet)

. "(): " . TET_get_errmsg($tet) . "/n");

}

/* 获取文档的页数*/

$n_pages = TET_pcos_get_number($tet, $doc, "length:pages");

for ($pageno = 1; $pageno <= $n_pages; ++$pageno) /* 逐页循环*/

{

$page = TET_open_page($tet, $doc, $pageno, $pageoptlist);

if ($page == -1)

{

print("Error " . TET_get_errnum($tet) . "in " .

TET_get_apiname($tet) . "() on page " . $pageno . ": " . TET_get_errmsg($tet) . "/n");

continue;

}

/* 提取所有的文本段 */

while (($text = TET_get_text($tet, $page)) != "")

{

/* 遍历所有字符*/

while (($ci = TET_get_char_info($tet, $page)))

{

/* 提取字体名称;字符位置可以通过ci->x和ci->y取得*/

$fontname = TET_pcos_get_string($tet, $doc,"fonts[" . $ci->fontid . "]/name");

}

print($text);

}

if (TET_get_errnum($tet) != 0)

{

print("Error " . TET_get_errnum($tet) . " in " . TET_get_apiname($tet) . " on page " . $pageno . ": " . TET_get_errmsg($tet) . "/n");

}

TET_close_page($tet, $page);

print("/n

"); /* add a delimiter between each zone */

}

print("

");

TET_close_document($tet, $doc);

TET_delete($tet);

?>

标签：

本站文章除注明转载外，均为本站原创或翻译。欢迎任何形式的转载，但请务必注明出处、不得修改原文相关链接，尊重他人劳动成果