基于php的web表单中的自动数字增加
因此，我创建了一个html表单，然后将结果发布到一个php文件中，该文件将其覆盖在PDF上，然后将该PDF发送给我自己和表单中的电子邮件。我现在想做的就是找到一个简单的方法，使PDF包含一个序列号 例如：第一次填写表单时，数字0001将自动输入PDF，第二次输入数字0002，依此类推 有没有一个简单的PHP函数来实现这一点 基本上，我是在创建一个在线发票表单，这样当我打服务电话时，我可以通过网络浏览器当场创建发票，然后通过电子邮件发送给我的办公室和客户基于php的web表单中的自动数字增加,php,forms,pdf,webforms,Php,Forms,Pdf,Webforms,因此，我创建了一个html表单，然后将结果发布到一个php文件中，该文件将其覆盖在PDF上，然后将该PDF发送给我自己和表单中的电子邮件。我现在想做的就是找到一个简单的方法，使PDF包含一个序列号 例如：第一次填写表单时，数字0001将自动输入PDF，第二次输入数字0002，依此类推 有没有一个简单的PHP函数来实现这一点 基本上，我是在创建一个在线发票表单，这样当我打服务电话时，我可以通过网络浏览器当场创建发票，然后通过电子邮件发送给我的办公室和客户 任何帮助都将不胜感激 对于递增的数字，您可
任何帮助都将不胜感激 对于递增的数字，您可以在数据库中保留一个数字，然后提取它，向其中添加1，使用它，然后下次将其放回数据库，但这似乎很复杂。评论中有人提到使用时间戳，这样做：
$invoicenumber = time(); //This number will always be unique
$time = time();
echo date("Y-m-d H:i:s",$time);
define('DB_HOST', 'localhost');
define('DB_USER', 'db_username');
define('DB_PASS', 'db_password');
define('DB_NAME', 'database_name');
//Establish a mysql connection
$mysqli = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
//Set up a query to get the highest number
$query = "SELECT invoicenumber FROM invoices ORDER BY invoicenumber DESC LIMIT 1";
//Get the result
$result = $mysqli->query($query);
$row = $result->fetch_assoc();
//If we have a record
if($row){
//New invoice number
$invoicenumber = $row['invoicenumber']++;
//Else (database is empty, so start at the beginning)
}else{
$invoicenumber = 1;
}
//Now we have our invoice number, so do whatever you want with it
/**
* Code here to use the number
* */
//Now we wanna add the new invoice to the database, so
/**
* Add any other info to this statement if you want.
* If any of it is user submitted data, be sure to use prepared statements
* (just look at php.net's documentation on prepared statements)
* w3schools also has some nice tutorials on how to safely insert stuff
* in to a database, so check it all out :)
* */
$query = "INSERT INTO invoices(invoicenumber) VALUES($invoicenumber)";
//Execute the query
if($mysqli->query($query)){
//Show success
echo "Invoice $invoicenumber has been added to the database.";
}else{
//Show error
echo "Unfortunately we could not add invoice $invoicenumber to the database.";
}
//Now we can clear up our resources
$stmt->free_result(); $stmt->close(); $mysqli->close();
define('DB_HOST', 'localhost');
define('DB_USER', 'db_username');
define('DB_PASS', 'db_password');
define('DB_NAME', 'database_name');
//Establish a mysql connection
$mysqli = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
//Set up a query to get the highest number
$query = "SELECT invoicenumber FROM invoices ORDER BY invoicenumber DESC LIMIT 1";
//Get the result
$result = $mysqli->query($query);
$row = $result->fetch_assoc();
//If we have a record
if($row){
//New invoice number
$invoicenumber = $row['invoicenumber']++;
//Else (database is empty, so start at the beginning)
}else{
$invoicenumber = 1;
}
//Now we have our invoice number, so do whatever you want with it
/**
* Code here to use the number
* */
//Now we wanna add the new invoice to the database, so
/**
* Add any other info to this statement if you want.
* If any of it is user submitted data, be sure to use prepared statements
* (just look at php.net's documentation on prepared statements)
* w3schools also has some nice tutorials on how to safely insert stuff
* in to a database, so check it all out :)
* */
$query = "INSERT INTO invoices(invoicenumber) VALUES($invoicenumber)";
//Execute the query
if($mysqli->query($query)){
//Show success
echo "Invoice $invoicenumber has been added to the database.";
}else{
//Show error
echo "Unfortunately we could not add invoice $invoicenumber to the database.";
}
//Now we can clear up our resources
$stmt->free_result(); $stmt->close(); $mysqli->close();
请注意：这是一个非常基本的示例。如果您使用的是用户提交的数据，您的代码将具有附加功能和增强的安全性，因此请做好准备，并确保您在继续使用之前完全理解此代码的每一行。我对患者报告上的患者登录号做了完全相同的处理
include('/home/user/php/class.pdf2text.php');
$p2t = new PDF2Text();
$p2t->setFilename($pdf);
$p2t->decodePDF();
$data = $p2t->output();
$len = strlen($data);
$pos = strpos($data,$accession);
if (pos){
$in .= "$accession,";
$checked++;
}
else{
$missingPDF += 1;echo "\n<p> <span class='bold red'>INCORRECT ACCESSION NUMBER c=$row[0] p=$row[1]</span>\n";
}
if ($checked > 0){
$in = substr($in,0,-1) . ')';
$sql = "UPDATE `Patient` SET `PDF`=1 WHERE $in";
}
include（'/home/user/php/class.pdf2text.php'）；
$p2t=新的PDF2Text（）；
$p2t->setFilename（$pdf）；
$p2t->decodePDF（）；
$data=$p2t->output（）；
$len=strlen（$data）；
$pos=STRPO（$data，$ACCESS）；
如果（pos）{
$in.=“$accession，”；
$checked++；
}
否则{
$missingPDF+=1；echo“\n ；不正确的登录号c=$row[0]p=$row[1]\n”；
}
如果（$checked>0）{
$in=substr（$in，0，-1）。”）；
$sql=“UPDATE`Patient`SET`PDF`=1，其中$in”；
}
class PDF2Text {
// Some settings
var $multibyte = 4; // Use setUnicode(TRUE|FALSE)
var $convertquotes = ENT_QUOTES; // ENT_COMPAT (double-quotes), ENT_QUOTES (Both), ENT_NOQUOTES (None)
var $showprogress = true; // TRUE if you have problems with time-out
// Variables
var $filename = '';
var $decodedtext = '';
function setFilename($filename) {
// Reset
$this->decodedtext = '';
$this->filename = $filename;
}
function output($echo = false) {
if($echo) echo $this->decodedtext;
else return $this->decodedtext;
}
function setUnicode($input) {
// 4 for unicode. But 2 should work in most cases just fine
if($input == true) $this->multibyte = 4;
else $this->multibyte = 2;
}
function decodePDF() {
// Read the data from pdf file
$infile = @file_get_contents($this->filename, FILE_BINARY);
if (empty($infile))
return "";
// Get all text data.
$transformations = array();
$texts = array();
// Get the list of all objects.
preg_match_all("#obj[\n|\r](.*)endobj[\n|\r]#ismU", $infile . "endobj\r", $objects);
$objects = @$objects[1];
// Select objects with streams.
for ($i = 0; $i < count($objects); $i++) {
$currentObject = $objects[$i];
// Prevent time-out
@set_time_limit ();
if($this->showprogress) {
// echo ". ";
flush(); ob_flush();
}
// Check if an object includes data stream.
if (preg_match("#stream[\n|\r](.*)endstream[\n|\r]#ismU", $currentObject . "endstream\r", $stream )) {
$stream = ltrim($stream[1]);
// Check object parameters and look for text data.
$options = $this->getObjectOptions($currentObject);
if (!(empty($options["Length1"]) && empty($options["Type"]) && empty($options["Subtype"])) )
// if ( $options["Image"] && $options["Subtype"] )
// if (!(empty($options["Length1"]) && empty($options["Subtype"])) )
continue;
// Hack, length doesnt always seem to be correct
unset($options["Length"]);
// So, we have text data. Decode it.
$data = $this->getDecodedStream($stream, $options);
if (strlen($data)) {
if (preg_match_all("#BT[\n|\r](.*)ET[\n|\r]#ismU", $data . "ET\r", $textContainers)) {
$textContainers = @$textContainers[1];
$this->getDirtyTexts($texts, $textContainers);
} else
$this->getCharTransformations($transformations, $data);
}
}
}
// Analyze text blocks taking into account character transformations and return results.
$this->decodedtext = $this->getTextUsingTransformations($texts, $transformations);
}
function decodeAsciiHex($input) {
$output = "";
$isOdd = true;
$isComment = false;
for($i = 0, $codeHigh = -1; $i < strlen($input) && $input[$i] != '>'; $i++) {
$c = $input[$i];
if($isComment) {
if ($c == '\r' || $c == '\n')
$isComment = false;
continue;
}
switch($c) {
case '\0': case '\t': case '\r': case '\f': case '\n': case ' ': break;
case '%':
$isComment = true;
break;
default:
$code = hexdec($c);
if($code === 0 && $c != '0')
return "";
if($isOdd)
$codeHigh = $code;
else
$output .= chr($codeHigh * 16 + $code);
$isOdd = !$isOdd;
break;
}
}
if($input[$i] != '>')
return "";
if($isOdd)
$output .= chr($codeHigh * 16);
return $output;
}
function decodeAscii85($input) {
$output = "";
$isComment = false;
$ords = array();
for($i = 0, $state = 0; $i < strlen($input) && $input[$i] != '~'; $i++) {
$c = $input[$i];
if($isComment) {
if ($c == '\r' || $c == '\n')
$isComment = false;
continue;
}
if ($c == '\0' || $c == '\t' || $c == '\r' || $c == '\f' || $c == '\n' || $c == ' ')
continue;
if ($c == '%') {
$isComment = true;
continue;
}
if ($c == 'z' && $state === 0) {
$output .= str_repeat(chr(0), 4);
continue;
}
if ($c < '!' || $c > 'u')
return "";
$code = ord($input[$i]) & 0xff;
$ords[$state++] = $code - ord('!');
if ($state == 5) {
$state = 0;
for ($sum = 0, $j = 0; $j < 5; $j++)
$sum = $sum * 85 + $ords[$j];
for ($j = 3; $j >= 0; $j--)
$output .= chr($sum >> ($j * 8));
}
}
if ($state === 1)
return "";
elseif ($state > 1) {
for ($i = 0, $sum = 0; $i < $state; $i++)
$sum += ($ords[$i] + ($i == $state - 1)) * pow(85, 4 - $i);
for ($i = 0; $i < $state - 1; $i++) {
try {
if(false == ($o = chr($sum >> ((3 - $i) * 8)))) {
throw new Exception('Error');
}
$output .= $o;
} catch (Exception $e) { /*Dont do anything*/ }
}
}
return $output;
}
function decodeFlate($data) {
return @gzuncompress($data);
}
function getObjectOptions($object) {
$options = array();
if (preg_match("#<<(.*)>>#ismU", $object, $options)) {
$options = explode("/", $options[1]);
@array_shift($options);
$o = array();
for ($j = 0; $j < @count($options); $j++) {
$options[$j] = preg_replace("#\s+#", " ", trim($options[$j]));
if (strpos($options[$j], " ") !== false) {
$parts = explode(" ", $options[$j]);
$o[$parts[0]] = $parts[1];
} else
$o[$options[$j]] = true;
}
$options = $o;
unset($o);
}
return $options;
}
function getDecodedStream($stream, $options) {
$data = "";
if (empty($options["Filter"]))
$data = $stream;
else {
$length = !empty($options["Length"]) ? $options["Length"] : strlen($stream);
$_stream = substr($stream, 0, $length);
foreach ($options as $key => $value) {
if ($key == "ASCIIHexDecode")
$_stream = $this->decodeAsciiHex($_stream);
elseif ($key == "ASCII85Decode")
$_stream = $this->decodeAscii85($_stream);
elseif ($key == "FlateDecode")
$_stream = $this->decodeFlate($_stream);
elseif ($key == "Crypt") { // TO DO
}
}
$data = $_stream;
}
return $data;
}
function getDirtyTexts(&$texts, $textContainers) {
for ($j = 0; $j < count($textContainers); $j++) {
if (preg_match_all("#\[(.*)\]\s*TJ[\n|\r]#ismU", $textContainers[$j], $parts))
$texts = array_merge($texts, array(@implode('', $parts[1])));
elseif (preg_match_all("#T[d|w|m|f]\s*(\(.*\))\s*Tj[\n|\r]#ismU", $textContainers[$j], $parts))
$texts = array_merge($texts, array(@implode('', $parts[1])));
elseif (preg_match_all("#T[d|w|m|f]\s*(\[.*\])\s*Tj[\n|\r]#ismU", $textContainers[$j], $parts))
$texts = array_merge($texts, array(@implode('', $parts[1])));
}
}
function getCharTransformations(&$transformations, $stream) {
preg_match_all("#([0-9]+)\s+beginbfchar(.*)endbfchar#ismU", $stream, $chars, PREG_SET_ORDER);
preg_match_all("#([0-9]+)\s+beginbfrange(.*)endbfrange#ismU", $stream, $ranges, PREG_SET_ORDER);
for ($j = 0; $j < count($chars); $j++) {
$count = $chars[$j][1];
$current = explode("\n", trim($chars[$j][2]));
for ($k = 0; $k < $count && $k < count($current); $k++) {
if (preg_match("#<([0-9a-f]{2,4})>\s+<([0-9a-f]{4,512})>#is", trim($current[$k]), $map))
$transformations[str_pad($map[1], 4, "0")] = $map[2];
}
}
for ($j = 0; $j < count($ranges); $j++) {
$count = $ranges[$j][1];
$current = explode("\n", trim($ranges[$j][2]));
for ($k = 0; $k < $count && $k < count($current); $k++) {
if (preg_match("#<([0-9a-f]{4})>\s+<([0-9a-f]{4})>\s+<([0-9a-f]{4})>#is", trim($current[$k]), $map)) {
$from = hexdec($map[1]);
$to = hexdec($map[2]);
$_from = hexdec($map[3]);
for ($m = $from, $n = 0; $m <= $to; $m++, $n++)
$transformations[sprintf("%04X", $m)] = sprintf("%04X", $_from + $n);
} elseif (preg_match("#<([0-9a-f]{4})>\s+<([0-9a-f]{4})>\s+\[(.*)\]#ismU", trim($current[$k]), $map)) {
$from = hexdec($map[1]);
$to = hexdec($map[2]);
$parts = preg_split("#\s+#", trim($map[3]));
for ($m = $from, $n = 0; $m <= $to && $n < count($parts); $m++, $n++)
$transformations[sprintf("%04X", $m)] = sprintf("%04X", hexdec($parts[$n]));
}
}
}
}
function getTextUsingTransformations($texts, $transformations) {
$document = "";
for ($i = 0; $i < count($texts); $i++) {
$isHex = false;
$isPlain = false;
$hex = "";
$plain = "";
for ($j = 0; $j < strlen($texts[$i]); $j++) {
$c = $texts[$i][$j];
switch($c) {
case "<":
$hex = "";
$isHex = true;
$isPlain = false;
break;
case ">":
$hexs = str_split($hex, $this->multibyte); // 2 or 4 (UTF8 or ISO)
for ($k = 0; $k < count($hexs); $k++) {
$chex = str_pad($hexs[$k], 4, "0"); // Add tailing zero
if (isset($transformations[$chex]))
$chex = $transformations[$chex];
$document .= html_entity_decode("&#x".$chex.";");
}
$isHex = false;
break;
case "(":
$plain = "";
$isPlain = true;
$isHex = false;
break;
case ")":
$document .= $plain;
$isPlain = false;
break;
case "\\":
$c2 = $texts[$i][$j + 1];
if (in_array($c2, array("\\", "(", ")"))) $plain .= $c2;
elseif ($c2 == "n") $plain .= '\n';
elseif ($c2 == "r") $plain .= '\r';
elseif ($c2 == "t") $plain .= '\t';
elseif ($c2 == "b") $plain .= '\b';
elseif ($c2 == "f") $plain .= '\f';
elseif ($c2 >= '0' && $c2 <= '9') {
$oct = preg_replace("#[^0-9]#", "", substr($texts[$i], $j + 1, 3));
$j += strlen($oct) - 1;
$plain .= html_entity_decode("&#".octdec($oct).";", $this->convertquotes);
}
$j++;
break;
default:
if ($isHex)
$hex .= $c;
elseif ($isPlain)
$plain .= $c;
break;
}
}
$document .= "\n";
}
return $document;
}
}
类PDF2文本{
//一些设置
var$multibyte=4；//使用setUnicode（TRUE | FALSE）
var$convertquotes=ENT_QUOTES；//ENT_COMPAT（双引号）、ENT_引号（两个）、ENT_NOQUOTES（无）
var$showprogress=true；//如果超时有问题，则为true
//变数
var$filename=''；
var$decodedtext=''；
函数setFilename（$filename）{
//重置
$this->decodedtext=''；
$this->filename=$filename；
}
函数输出（$echo=false）{
如果（$echo）echo$this->decodedtext；
否则返回$this->decodedtext；
}
函数setUnicode（$input）{
//4表示unicode，但2在大多数情况下都可以正常工作
如果（$input==true）$this->multibyte=4；
else$this->multibyte=2；
}
函数decodePDF（）{
//从pdf文件中读取数据
$infle=@file\u get\u contents（$this->filename，file\u BINARY）；
如果（空（$infle））
返回“”；
//获取所有文本数据。
$transformations=array（）；
$text=array（）；
//获取所有对象的列表。
preg#u match_all（“#obj[\n |\r]（*）endobj[\n |\r]#ismU”、$infle.“endobj\r”、$objects）；
$objects=@$objects[1]；
//选择具有流的对象。
对于（$i=0；$ishowprogress）{
//“回声”；
冲水；
}
//检查对象是否包含数据流。
if（preg#u match（“#stream[\n |\r]（.*）endstream[\n |\r]#ismU”、$currentObject.“endstream\r”、$stream））{
$stream=ltrim（$stream[1]）；
//检查对象参数并查找文本数据。
$options=$this->getObjectOptions（$currentObject）；
if（！（空（$options[“Length1”]）和空（$options[“Type”]）和空（$options[“Subtype”]））
//如果（$options[“Image”]&&$options[“Subtype”]）
//if（！（空（$options[“Length1”]）和空（$options[“Subtype”]））
继续；
//哈克，长度似乎并不总是正确的
未设置（$选项[“长度]）；
//所以，我们有文本数据。解码它。
$data=$this->getDecodedStream（$stream，$options）；
if（斯特伦（数据））{
if（preg#u match#u all（#BT[\n|\r]（*）ET[\n|\r]#ismU“，$data.“ET\r”，$textContainers））{
$textContainers=@$textContainers[1]；
$this->getDirtyText（$text，$textContainers）；
}否则
$this->getChartTransformations（$transformations，$data）；
}
}
}
//分析文本块时考虑字符转换并返回结果。
$this->decodedtext=$this->getTextUsingTransformations（$text，$transformations）；
}
函数decodeAsciHex（$input）{
$output=“”；
$isOdd=true；
$isComment=false；
对于（$i=0，$codeHigh=-1；$i'；$i++）{
$c=$input[$i]；
如果（$isComment）{
如果（$c='\r'| |$c=='\n'）
$isComment=fals