Php 严重性：警告消息：非法字符串偏移量'；id'；我自己的项目

在codeigniter中，我的model/Master.php的代码有问题。

model/Master.php：

function get_tasks($limit=20,$task_id=0,$page_num=1,$search='',$sortfield='default',$sort='sort')
{
    $data = array();
    $sortable_fields = array('id'=>'t.id','ime'=>'t.ime','sn_br'=>'t.sn_br','gar_stanje'=>'t.gar_stanje','opis_kvara'=>'t.opis_kvara','comment'=>'t.comment','task_assigned'=>'t.task_assigned','ime'=>'t.ime','prezime'=>'t.prezime','br_tel'=>'t.br_tel','email'=>'t.email','datum'=>'t.datum','account_id'=>'u3.account_id');
    $account_id = $this->session->userdata('account_id');
    $offset = ($page_num==1) ? 0 : ($page_num*$limit)-$limit;
    if ($task_id!=0){
        $this->db->select('t.id, t.ime, t.sn_br, t.gar_stanje,  t.opis_kvara, t.comment, u2.user_firstname as task_assigned, t.ime, t.prezime, t.br_tel, t.email, t.datum, u3.account_id');
        }else{
        $this->db->select('SQL_CALC_FOUND_ROWS t.id, t.ime, t.sn_br, t.gar_stanje,  t.opis_kvara, t.comment, u2.user_firstname as task_assigned, t.ime, t.prezime, t.br_tel, t.email, t.datum, u3.account_id', FALSE);  
    }
    if ($task_id!=0){
        $this->db->where('t.id',(string)$task_id);
    }
    $this->db->where('u3.account_id',(string)$account_id);
    $this->db->where('t.task_status','1');
    $this->db->from('serv t');
    $this->db->join('users u2', 't.task_assigned = u2.user_id', 'inner');
    $this->db->join('accounts u3', 'u3.account_id = u3.account_id', 'inner');

    if ($task_id!=0){
        $this->db->limit(1);
    }else{
        $this->db->limit($limit,$offset);
    }
    if (array_key_exists($sortfield,$sortable_fields) && ($sort=='asc' || $sort=='desc')){
        $this->db->order_by($sortable_fields[$sortfield],strtoupper($sort));
    }else{
        $this->db->order_by('t.task_status ASC, t.datum DESC');
    }
    $query = $this->db->get();
    // echo $this->db->last_query();
    if ($query->num_rows()>0){
        $tasks = $query->result_array();
        if ($task_id!=0){
            $data['task'] = $tasks[0];
        }else{
            $data['serviss'] = $tasks;
        }
        $query = $this->db->query('SELECT FOUND_ROWS() AS `Count`');
        $data["total_rows"] = $query->row()->Count;
    }else{
        $data['serviss']['id'] = 'Unable to find!';
        $data['serviss']['ime'] = 'Unable to find!';
        $data['serviss']['prezime'] = 'Unable to find!';
        $data['serviss']['br_tel'] = 'Unable to find!';
        $data['serviss']['naziv_artikla'] = 'Unable to find!';
        $data['serviss']['sn_br'] = 'Unable to find!';
        $data['serviss']['gar_stanje'] = 'Unable to find!';
        $data['serviss']['opis_kvara'] = 'Unable to find!';
        $data['serviss']['opis_posla'] = 'Unable to find!';
        $data['serviss']['utro_mater'] = 'Unable to find!';
        $data['serviss']['comment'] = 'Unable to find!';
        $data['serviss']['datum'] = 'Unable to find!';
        $data['serviss']['datum_otp'] = 'Unable to find!';
        $data['serviss']['task_status'] = '0';
        $data["total_rows"] = '0';
    }
    return $data;   
}

views/default/servis.php

<div class="clearfix">&nbsp;</div>
    <?php if ($this->session->flashdata('msg')=='1'){ ?>
    <div id="msg_container2" class="alert alert-success alert-dismissible" role="alert">
      <button id="msg_close_button2" type="button" class="close" onclick="$('#msg_container2').hide();">&times;</button>
      <span id="msg_content2"><?=$this->session->flashdata('msg_data')?></span>
    </div>
<?php } ?>

<div class="table-responsive">
    <table class="table table-hover table-bordered table_sortable">
        <thead>
            <tr>
                <th class="s_header<?=($sortfield=='id' && $sort=='asc' ? ' s_asc' : ($sortfield=='id' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/id/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">ID</a></th>
                <th class="s_header<?=($sortfield=='ime' && $sort=='asc' ? ' s_asc' : ($sortfield=='ime' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/ime/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">Ime</a></th>
                <th class="s_header<?=($sortfield=='prezime' && $sort=='asc' ? ' s_asc' : ($sortfield=='prezime' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/prezime/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">Prezime</a></th>
                <th class="s_header<?=($sortfield=='br_tel' && $sort=='asc' ? ' s_asc' : ($sortfield=='br_tel' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/br_tel/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">Broj telefona</a></th>
                <th class="s_header<?=($sortfield=='naziv_artikla' && $sort=='asc' ? ' s_asc' : ($sortfield=='naziv_artikla' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/naziv_artikla/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">Naziv Artikla</a></th>
                <th class="s_header<?=($sortfield=='sn_br' && $sort=='asc' ? ' s_asc' : ($sortfield=='sn_br' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/sn_br/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">Serijski broj</a></th>
                <th class="s_header<?=($sortfield=='gar_stanje' && $sort=='asc' ? ' s_asc' : ($sortfield=='gar_stanje' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/gar_stanje/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">Pod garancijom</a></th>
                <th class="s_header<?=($sortfield=='opis_kvara' && $sort=='asc' ? ' s_asc' : ($sortfield=='opis_kvara' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/opis_kvara/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">Opis Kvara</a></th>
                <th class="s_header<?=($sortfield=='opis_posla' && $sort=='asc' ? ' s_asc' : ($sortfield=='opis_posla' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/opis_posla/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">Opis Posla</a></th>
                <th class="s_header<?=($sortfield=='utro_mater' && $sort=='asc' ? ' s_asc' : ($sortfield=='utro_mater' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/utro_mater/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">Utroseni materijal</a></th>
                <th class="s_header<?=($sortfield=='comment' && $sort=='asc' ? ' s_asc' : ($sortfield=='comment' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/comment/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">Komentar</a></th>
                <th class="s_header<?=($sortfield=='datum' && $sort=='asc' ? ' s_asc' : ($sortfield=='datum' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/datum/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">Datum zaprimanja</a></th>
                <th class="s_header<?=($sortfield=='datum_otp' && $sort=='asc' ? ' s_asc' : ($sortfield=='datum_otp' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/datum_otp/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">Datum otprimanja</a></th>
                <th class="s_header<?=($sortfield=='task_status' && $sort=='asc' ? ' s_asc' : ($sortfield=='task_status' && $sort=='desc' ? ' s_desc' : ''))?>"><a href="<?=url('servis/s/'.$search.'/task_status/'.($sort!='desc' ? 'desc' : 'asc').'/'.$limit.'/'.$page_num)?>">Posao zavrsen</a></th>

    </tr>
        </thead>
        <tbody>
        <?php 
        if (!empty($task_data['serviss'])){
        foreach ($task_data['serviss'] as $t_key => $t_value) { ?>
            <tr>
                <td><a href="<?=url('servis/info/'.$t_value['id'])?>"><?=$t_value['naziv_artikla']?></a></td>
                <td><?=$t_value['ime']?></td>
                <td><?=$t_value['prezime']?></td>
                <td><?=$t_value['br_tel']?></td>
                <td><?=$t_value['naziv_artikla']?></td>
                <td><?=$t_value['sn_br']?></td>
                <td><?=$t_value['gar_stanje']?></td>
                <td><?=$t_value['opis_kvara']?></td>
                <td><?=$t_value['opis_posla']?></td>
                <td><?=$t_value['utro_mater']?></td>
                <td><?=$t_value['comment']?></td>
                <td><?=$t_value['datum']?></td>
                <td><?=$t_value['datum_otp']?></td>
                <td><?=$this->selects->task_status('','',$t_value['task_status'],1)?></td>                  
            </tr>
        <?php }}else{ ?>
            <tr>
                <td>No Information</td>
                <td>No Information</td>
                <td>No Information</td>
                <td>No Information</td>
                <td>No Information</td>
                <td>No Information</td>
                <td>No Information</td>
                <td>No Information</td>
                <td>No Information</td>
                <td>No Information</td>
                <td>No Information</td>
                <td>No Information</td>
                <td>No Information</td>
                <td>No Information</td>
            </tr>
        <?php } ?>
        </tbody>
    </table>
</div>
<?=$pagination_links?>

请，如果有人知道如何解决这个问题，以及巫婆导致这个问题的原因，请联系我或写下答案

我非常感谢所有试图克服这一错误的人

---

在我更改代码之后 @Sugumar Venkatesan
在我改变之后： foreach（$task_data['servis']作为$t_key=>$t_value）{} 到 foreach（$t_key=>$t_value形式的任务_数据）{}

现在我收到消息“找不到”，显然现在是从数据库检索数据的问题。

还有，@Alex Andrei这里是var_dump的echo

array(14) { ["id"]=> string(15) "Unable to find!" ["ime"]=> string(15) "Unable to find!" ["prezime"]=> string(15) "Unable to find!" ["br_tel"]=> string(15) "Unable to find!" ["naziv_artikla"]=> string(15) "Unable to find!" ["sn_br"]=> string(15) "Unable to find!" ["gar_stanje"]=> string(15) "Unable to find!" ["opis_kvara"]=> string(15) "Unable to find!" ["opis_posla"]=> string(15) "Unable to find!" ["utro_mater"]=> string(15) "Unable to find!" ["comment"]=> string(15) "Unable to find!" ["datum"]=> string(15) "Unable to find!" ["datum_otp"]=> string(15) "Unable to find!" ["task_status"]=> string(1) "0" }

我想

foreach ($task_data['serviss'] as $t_key => $t_value) {} 
should be 
foreach($task_data as $t_key => $t_value) {}

---

另外，数组中不能有重复的键。请在

views/default/servis.php

中的

if

子句中执行

var\u转储（$task\u data['servis'））

。这里

如果（！empty（$task_data['servis']）{

那么我们可以看到模型中数组的结构，

$data['task_data']=$this->master->get_tasks

然后

return$data

然后在控制器中

$data

被传递给view@Sugumar但现在我遇到了一个新问题。我编辑了我的帖子，这样你就可以看到现在发生了什么

foreach ($task_data['serviss'] as $t_key => $t_value) {} 
should be 
foreach($task_data as $t_key => $t_value) {}