我正在CodeIgniter框架上建立一个以前的PHP项目,我想使用ODBC从SYBASE数据库中获取一些数据。
当数据量不大时,它工作正常,但是当我需要获取海量数据时,它只是给我一个HTTP错误500。
在我以前的项目中,我没有使用CI,但是没有得到这个错误,但是我得到了一些time_limit_error,我通过扩展'max_execution_time'来解决了;
我已经在CI上尝试了此操作,但这毫无意义,而且我从CI中获得的错误也不是特定原因,因为它只显示'HTTP ERROR 500';
连接正确,因为当我不需要海量数据时它可以工作,但是我也没有使用CI标准,因为我也有问题。
有人知道我为什么收到此错误,为什么我可以解决它?
我在apache日志中遇到此错误:
[Fri Apr 12 14:49:03.573513 2019] [php7:error] [pid 11768:tid 1964] [client ::1:55425] PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 35767312 bytes) in C:\\xampp\\htdocs\\CodeIgniter\\system\\core\\Output.php on line 198, referer: http://localhost/CodeIgniter/Samsic/provisoes
[Fri Apr 12 14:49:03.574982 2019] [php7:error] [pid 11768:tid 1964] [client::1:55425] PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 35770368 bytes) in Unknown on line 0, referer: http://localhost/CodeIgniter/Samsic/provisoes
打印页面:
> <?php ini_set("memory_limit", "256M"); ?> <!DOCTYPE html> <html>
> <head> <title></title> <style> body{ font-size: 0.9em; }
> .container{ width: 100%; height: 100%; }
>
> @media print { @page { margin: 20px; } body { margin: 1.6cm; } }
> table, th, td { border: 1px solid black; </style> </head> <body
> onload="window.print()"> <?php $this->load->view('header'); ?> <?=
> $resultado; ?>
>
> </body> </html>
控制器:
<?php
ini_set("memory_limit", "256M");
defined('BASEPATH') OR exit('No direct script access allowed');
class Pagamentos extends CI_Controller {
function __construct(){
parent::__construct();
$this->load->model('Pagamentos_model', '', TRUE);
$this->load->library('session');
}
public function index(){
$data['form'] = 'Pagamentosform';
$this->load->view('norm',$data);
}
public function content(){
$ano = addslashes($this->input->post('anop'));
$session_data = array('anop' => $ano);
$this->session->set_userdata($session_data);
$codigo = addslashes($this->session->codigo);
$resultado=$this->Pagamentos_model->read($codigo,$ano);
$data['form'] = 'Pagamentosform';
$data['res'] = 'Pagamentoscontent';
$data['resultado'] = $resultado;
$this->load->view('norm',$data);
}
public function imprimir(){
$ano = addslashes($this->session->anop);
$codigo = addslashes($this->session->codigo);
$resultado = $this->Pagamentos_model->imprimir($ano,$codigo);
$data['resultado'] = $resultado;
$this->load->view('imprimirTemplate',$data);
}
public function grafico(){
$data['form'] = 'Pagamentosform';
$data['res'] = 'grafico';
$codigo = addslashes($this->session->codigo);
$ano = addslashes($this->session->anop);
$grafico = $this->Pagamentos_model->grafico($ano,$codigo);
$data['data'] = $grafico;
$this->load->view('norm',$data);
}
}
模型函数imprimir:
public function imprimir($ano,$codigo){
require(APPPATH.'libraries/odbc_conn.php');
$query = odbc_exec($db, 'Select * from GP_Vw_Valores_Pagos where Ano='.$ano.' and Codigo='.$codigo.' order by CD');
$row=odbc_fetch_array($query);
$output= '<h1 style="text-align: center;"> Pagamentos'.$ano.' </h1> <table class="table" style="width: 100%; margin-bottom:40px; margin-top: 15px; ">
<thead>
<tr style="font-size: 1em;margin-bottom: 15px;text-align: center;">
<th scope="col">CD</th>
<th scope="col">Descrição</th>
<th scope="col">Tipo</th>
<th scope="col">Janeiro</th>
<th scope="col">Fevereiro</th>
<th scope="col">Março</th>
<th scope="col">Abril</th>
<th scope="col">Maio</th>
<th scope="col">Junho</th>
<th scope="col">Julho</th>
<th scope="col">Agosto</th>
<th scope="col">Setembro</th>
<th scope="col">Outubro</th>
<th scope="col">Novembro</th>
<th scope="col">Dezembro</th>
</tr>
</thead>';
while($row){
$output .= '<tr style="text-align: center;">
<td>' .$row["CD"].'</td>
<td>'.iconv("CP850", "UTF-8", $row['Descricao']).'</td>
<td>VI</td>
<td>' .number_format($row['Vl01'] , 2, '.', '').'</td>
<td>' .number_format($row['Vl02'] , 2, '.', '').'</td>
<td>' .number_format($row['Vl03'] , 2, '.', '').'</td>
<td>' .number_format($row['Vl04'] , 2, '.', '').'</td>
<td>' .number_format($row['Vl05'] , 2, '.', '').'</td>
<td>' .number_format($row['Vl06'] , 2, '.', '').'</td>
<td>' .number_format($row['Vl07'] , 2, '.', '').'</td>
<td>' .number_format($row['Vl08'] , 2, '.', '').'</td>
<td>' .number_format($row['Vl09'] , 2, '.', '').'</td>
<td>' .number_format($row['Vl10'] , 2, '.', '').'</td>
<td>' .number_format($row['Vl11'] , 2, '.', '').'</td>
<td>' .number_format($row['Vl12'] , 2, '.', '').'</td>
</tr>
<tr style="text-align: center;">
<td></td>
<td></td>
<td>QT</td>
<td>' .number_format($row['Qt01'] , 2, '.', '').'</td>
<td>' .number_format($row['Qt02'] , 2, '.', '').'</td>
<td>' .number_format($row['Qt03'] , 2, '.', '').'</td>
<td>' .number_format($row['Qt04'] , 2, '.', '').'</td>
<td>' .number_format($row['Qt05'] , 2, '.', '').'</td>
<td>' .number_format($row['Qt06'] , 2, '.', '').'</td>
<td>' .number_format($row['Qt07'] , 2, '.', '').'</td>
<td>' .number_format($row['Qt08'] , 2, '.', '').'</td>
<td>' .number_format($row['Qt09'] , 2, '.', '').'</td>
<td>' .number_format($row['Qt10'] , 2, '.', '').'</td>
<td>' .number_format($row['Qt11'] , 2, '.', '').'</td>
<td>' .number_format($row['Qt12'] , 2, '.', '').'</td>
</tr> ';
}
return $output;
}
答案 0 :(得分:1)
好的,您遇到了此内存错误,因为您正在将整个表串联到一个无穷循环内的字符串变量中,并尝试将其输出。
请勿在模型上执行该操作。
您应该从模型中返回要在视图上使用的值,以直接构建视图。
此代码中有很多修补程序:
</table>
)while($row)
<-可能是导致错误的原因,您没有在任何地方更改$ row,我认为应该是while($row=odbc_fetch_row($query))
。addslashes
不安全,应改用prepared statement
:http://www.securityidiots.com/Web-Pentest/SQL-Injection/addslashes-bypass-sql-injection.html 您可能说内存不足,因为您说正在加载大量数据。
尝试为您的需求找到最佳价值
ini_set("memory_limit", "256M");
您需要先执行此操作,然后再加载数据,也可以将php设置更改为系统范围。