如何解决Laravel DOMPDF 超出内存限制
我有 Laravel DOMPDF 包的问题。 我已将 php.ini 内存限制设置为 2G，并使用 --timeout=3600 启动了一个队列。 该脚本是一个 foreach，每次都会调用一个辅助函数，它生成 pdfs 7/8 分钟，然后停止执行，10 分钟后返回终端
Symfony\Component\ErrorHandler\Error\FatalError
Allowed memory size of 2147483648 bytes exhausted (tried to allocate 20480 bytes)
at vendor/dompdf/dompdf/src/Css/Style.php:577
573▕ //Early check on cache,before converting $length to array
574▕ if (isset($cache[$key])) {
575▕ return $cache[$key];
576▕ }
➜ 577▕ $length = [$length];
578▕ } else {
579▕ $key = implode("@",$length) . "/$ref_size";
580▕ if (isset($cache[$key])) {
581▕ return $cache[$key];
Whoops\Exception\ErrorException
Allowed memory size of 2147483648 bytes exhausted (tried to allocate 20480 bytes)
at vendor/dompdf/dompdf/src/Css/Style.php:577
573▕ //Early check on cache,$length) . "/$ref_size";
580▕ if (isset($cache[$key])) {
581▕ return $cache[$key];
+1 vendor frames
2 [internal]:0
Whoops\Run::handleShutdown()
我正在使用表格，我读到可能是因为这个原因。 感谢任何可以帮助我的人。
<?php
namespace App\Jobs;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldBeUnique;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
//helper
use App\Helpers\GeneratePdfHelper;
//models
use App\Models\Province;
use App\Models\Process;
use App\Models\Movement;
//others
use PDF;
use Illuminate\Support\Facades\Storage;
class GeneratePdfFiles implements ShouldQueue
{
use Dispatchable,InteractsWithQueue,Queueable,SerializesModels;
public $process_id;
/**
* Create a new job instance.
*
* @return void
*/
public function __construct($process_id)
{
$this->process_id = $process_id;
}
/**
* Execute the job.
*
* @return void
*/
public function handle()
{
$process = Process::find($this->process_id);
//look for all provinces
$provinces = Province::all();
//cicle them
foreach($provinces as $province)
{
//questa query mi dà una collection con tutti i movimenti per quel mese/anno/provincia
$movements = Movement::where('process_id','=',$process->id)->where('district',$province['code'])->get();
$movements = $movements->toArray();
if(!empty($movements))
{
//passo il risultato alla funzione che fa il pdf
//GENERATEPDFHELPER
$test = new GeneratePdfHelper($movements);
$test->create_pdf();
}
}
//Update the record in DB
$process->update(['is_pdf_generated' => 1]);
}
}
<?php
namespace app\Helpers; // Your helpers namespace
use PDF;
use Illuminate\Support\Facades\Storage;
if(!class_exists('GeneratePdfHelper')){
class GeneratePdfHelper
{
public $movements;
public function __construct(array $movements){
$this->movements = $movements;
}
public function create_pdf(){
//contatore per vedere quanti record ci sono per i movimenti di quel processo per quella provincia
$count = count($this->movements);
//totale ritenute e ruolo
$amount = 0; // ritenute
$roles = array(); //ruoli
foreach($this->movements as $key => $movement){
$amount = $amount + $movement['amount'];
if(!array_key_exists($movement['position'],$roles)){
$roles[$movement['position']] = 0;
$roles[$movement['position']] = $roles[$movement['position']] + 1;
} else {
$roles[$movement['position']] = $roles[$movement['position']] + 1;
}
}
$summary = array();
$summary['amount'] = $amount;
$summary['count'] = $count;
$summary['roles'] = $roles;
$pdf = PDF::loadView('pdf.index',['movements' => $this->movements,'summary' => $summary])->setPaper('a4','landscape');
$content = $pdf->download()->getOriginalContent();
Storage::put("processes/{$this->movements[0]['process_id']}/{$this->movements[0]['district']}.pdf",$content);
}
}
}
<!DOCTYPE html>
<html lang="it-IT">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Titolo</title>
<style>
@page{size:29.7cm 21cm; margin:0px}
body{margin:0px}
table {
table-layout: fixed;
}
</style>
</head>
<body leftmargin="0" marginwidth="0" topmargin="0" marginheight="0" offset="0" style="padding: 0;">
<div id="wrapper" style="background-color: #ffffff; margin: 0; padding: 10px 0; width: 100%; -webkit-text-size-adjust: none;">
<div cellpadding="0" cellspacing="0" width="100%">
<!-- Header -->
<table cellpadding="0" cellspacing="0" width="100%" id="template_header" style='display: inline-table; background-color: #d4d4d4; color: #000; border-bottom: 0; line-height: 100%; vertical-align: middle; font-family: "Helvetica Neue",Helvetica,Roboto,Arial,sans-serif; border-radius: 3px;'>
<tr>
<td style="padding: 25px;">
<h1 style='font-family: "Helvetica Neue",sans-serif; font-size: 35px; line-height: 100%; margin: 0; text-align: left; color: #000; background-color: inherit;'><strong>{{$movements[0]['district']}}</strong></h1>
</td>
<td style="padding: 25px;">
<div style='font-family: "Helvetica Neue",sans-serif; font-size: 25px; line-height: 100%; margin: 0; text-align: right; color: #6b6b6b; background-color: inherit; font-style: italic;'>(Mese di confronto: {{$movements[0]['month_payment']}}/{{$movements[0]['year_payment']}})</div>
</td>
</tr>
</table>
<!-- End Header -->
<!-- Middle -->
<table cellpadding="0" cellspacing="0" width="100%" id="template_middle" style='display: inline-table; background-color: #ffffff; color: #000; border-bottom: 0; line-height: 100%; vertical-align: middle; font-family: "Helvetica Neue",sans-serif; border-radius: 3px;'>
<tr>
<td style="padding: 25px; width: 50%; vertical-align: top;">
<div style='font-family: "Helvetica Neue",sans-serif; font-size: 20px; line-height: 100%; margin: 0; text-align: left; color: #000; background-color: inherit;'>
<div style="padding: 8px 0;">
<strong>Iscritti:</strong> {{$summary['count']}}
</div>
<div style="padding: 8px 0;">
<strong>Nuove iscrizioni:</strong> ?
</div>
</div>
<table cellpadding="0" cellspacing="0" width="100%" style='display: inline-table; background-color: #eaeaea; color: #000; border-bottom: 0; line-height: 100%; vertical-align: middle; font-family: "Helvetica Neue",sans-serif; border-radius: 3px; margin-top: 10px;'>
<tr>
<td style="padding: 15px;">
<strong>Ritenute nel mese:</strong> ?
</td>
<td style="padding: 15px;">
<strong>Riattivazioni:</strong> ?
</td>
<td style="padding: 15px;">
<strong>Cessazioni:</strong> ?
</td>
</tr>
</table>
<table cellpadding="0" cellspacing="0" width="100%" style='display: inline-table; background-color: #ffffff; color: #000; border-bottom: 0; line-height: 100%; vertical-align: middle; font-family: "Helvetica Neue",sans-serif; border-radius: 3px; margin-top: 10px;'>
<tr>
<td style="width: 70%; padding-right: 5px;">
<table cellpadding="0" cellspacing="0" width="100%" style='display: inline-table; background-color: #eaeaea; color: #000; border-bottom: 0; line-height: 100%; vertical-align: middle; font-family: "Helvetica Neue",sans-serif; border-radius: 3px; padding: 15px;'>
<tr>
<td style="padding: 0 0 10px;">
<strong>TOTALE (ritenute rimborsi):</strong>
</td>
<td style="padding: 0 0 10px; text-align: right;">
{{$summary['amount']}}
</td>
</tr>
<tr>
<td style="padding: 0 0 10px;">
<strong>Quota al Nazionale:</strong>
</td>
<td style="padding: 0 0 10px; text-align: right;">
?
</td>
</tr>
<tr>
<td style="padding: 0 0 10px;">
<strong>NETTO per la Sede prov.:</strong>
</td>
<td style="padding: 0 0 10px; text-align: right;">
€355,62
</td>
</tr>
</table>
</td>
<td style="width: 30%; padding-left: 5px; vertical-align: top;">
<table cellpadding="0" cellspacing="0" width="100%" style='display: inline-table; background-color: #eaeaea; color: #000; border-bottom: 0; line-height: 100%; vertical-align: middle; font-family: "Helvetica Neue",sans-serif; border-radius: 3px; padding: 15px;'>
<tr>
<td style="padding: 0 0 10px;">
<strong>ATA:</strong>
</td>
<td style="padding: 0 0 10px; text-align: right;">
16
</td>
</tr>
<tr>
<td style="padding: 0 0 10px;">
<strong>DOCENTI:</strong>
</td>
<td style="padding: 0 0 10px; text-align: right;">
33
</td>
</tr>
<tr>
<td style="padding: 0 0 10px;">
<strong>ITP:</strong>
</td>
<td style="padding: 0; text-align: right;">
0
</td>
</tr>
</table>
<table cellpadding="0" cellspacing="0" width="100%" style='display: inline-table; background-color: #eaeaea; color: #000; border-bottom: 0; line-height: 100%; vertical-align: middle; font-family: "Helvetica Neue",sans-serif; border-radius: 3px; padding: 15px; margin-top: 10px;'>
<tr>
<td style="padding: 0 0 10px;">
<strong>Precari:</strong>
</td>
<td style="padding: 0 0 10px; text-align: right;">
5
</td>
</tr>
<tr>
<td style="padding: 0 0 10px;">
<strong>Pensionandi:</strong>
</td>
<td style="padding: 0 0 10px; text-align: right;">
0
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
<td style="padding: 25px; width: 50%; vertical-align: top;">
<div style='font-family: "Helvetica Neue",sans-serif; font-size: 16px; line-height: 120%; margin: 0; text-align: left; color: #000; background-color: inherit; font-style: italic; border: 1px solid; padding: 15px;'>
<p style="margin: 0 0 20px;">
Lorem ipsum dolor sit amet,consectetur adipiscing elit,sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident,sunt in culpa qui officia deserunt mollit anim id est laborum.
</p>
<p style="margin: 0 0 20px;">
Lorem ipsum dolor sit amet,sunt in culpa qui officia deserunt mollit anim id est laborum.
</p>
</div>
</td>
</tr>
</table>
<!-- End Middle -->
<!-- Righe nominativi -->
<div style='font-family: "Helvetica Neue",sans-serif; font-size: 20px; line-height: 100%; margin: 0; text-align: left; color: #000; background-color: inherit;'>
<strong>1 - RITENUTE NEL Mese</strong>
</div>
<table cellpadding="0" cellspacing="0" width="100%" id="template_middle" style='display: inline-table; background-color: #ffffff; color: #000; line-height: 100%; vertical-align: middle; font-family: "Helvetica Neue",sans-serif; border-radius: 3px; font-size: 11px; text-transform: uppercase; text-align: left;'>
<tr style="background-color: #ffffff; font-style: italic;">
<th style="padding: 10px; border-bottom: 1px solid; width: 10px;">
Partita
</th>
<th style="padding: 10px; border-bottom: 1px solid;">
SS
</th>
<th style="padding: 10px; border-bottom: 1px solid;">
Eta'
</th>
<th style="padding: 10px; border-bottom: 1px solid;">
Nominativo
</th>
<th style="padding: 10px; border-bottom: 1px solid;">
Qualifica
</th>
<th style="padding: 10px; border-bottom: 1px solid;">
Sede di servizio
</th>
<th style="padding: 10px; border-bottom: 1px solid;">
Tel sede
</th>
<th style="padding: 10px; border-bottom: 1px solid;">
Fax sede
</th>
<th style="padding: 10px; border-bottom: 1px solid;">
Scadenze
</th>
</tr>
@foreach ($movements as $movement)
<tr style="background-color: #ffffff;">
<td style="padding: 10px;">
{{$movement['receipt_id']}}
</td>
<td style="padding: 10px;">
M
</td>
<td style="padding: 10px;">
54
</td>
<td style="padding: 10px;">
{{$movement['name_lastname']}}
</td>
<td style="padding: 10px;">
{{$movement['position']}}
</td>
<td style="padding: 10px;">
ANIC83300cc Senigallia Marchetti
</td>
<td style="padding: 10px;">
0717922289
</td>
<td style="padding: 10px;">
07165487
</td>
<td style="padding: 10px;">
202106 scadenza contratto
</td>
</tr>
@endforeach
</table>
<!-- End Righe nominativi -->
</div>
</div>
</body>
</html>
解决方法
总的来说，就工作实际实现的目标而言，您的方法似乎是错误的或有点被误解。作业是短期运行的作业，它执行的代码可防止 Http 服务器响应缓慢，并且是一种更具可扩展性的解决方案。这不是非黑即白，但总的来说，长时间运行的任务更适合命令。
您使用了 2000 mb 的内存，这是很多，只要您继续添加模型，它就会更高。而是创建多个执行相同操作的小作业，每个作业将在其自身之后进行清理，因此永远不会超过内存限制，同时还能够同时执行多个 pdf's。
为单个 Movement 创建作业。
class GeneratePdfFile implements ShouldQueue
{
use Dispatchable,InteractsWithQueue,Queueable,SerializesModels;
public $province;
public $process_id;
/**
* Create a new job instance.
*
* @return void
*/
public function __construct(Province $province,$process_id)
{
$this->province = $province;
$this->process_id = $process_id;
}
public function handle() {
$movements = Movement::where('process_id','=',$process->id)->where('district',$this->province['code'])->get();
$movements = $movements->toArray();
if(!empty($movements))
{
//passo il risultato alla funzione che fa il pdf
//GENERATEPDFHELPER
$test = new GeneratePdfHelper($movements);
$test->create_pdf();
}
}
}
然后在创建作业时将您的 Province 循环到那里。
foreach($provinces as $province)
{
dispatch(new GeneratePdfFile($province,$process_id));
}
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