php - setting image as submit button in html -


at present using code follows in view image not displaying have given working. 

<input type="submit" id="button" name="submit" value="generate report" src="<?php echo base_url();?>images/generatereports_btn.png" onmouseover="this.src='<?php echo base_url();?>images/generatereports_high.png'" onmouseout="this.src='<?php echo base_url();?>images/generatereports_btn.png'"/>

when using following code image displaying gave getting php error in controller , model. wrong doing , how have use in order make work me please thanks.

<input type="image" value="generate report" name="submit" id="button" src="<?php echo base_url();?>images/generatereports_btn.png" alt="submit" onmouseout="this.src='<?php echo base_url();?>images/generatereports_btn.png'" onmouseover="this.src='<?php echo base_url();?>images/generatereports_high.png'>

my controller looks 

   function survey_demo_response() {                $data['survey_details'] = $this->session->store['survey'];         if (isset($_post['submit']) && $_post['submit'] == 'generate report')          {             $questiondata = $_post['questions'];         }         if (empty($_post['questions']))          {                        $questiondata = 1;         }         $data['question'] = $this->report_model->get_response_question($questiondata);         $this->load->view('reports/survey_demo_response',$data);  }

the error gettin 

a php error encountered  severity: notice  message: undefined variable: questiondata  filename: admin/reports.php  line number: 90 php error encountered  severity: notice  message: undefined offset: 0  filename: models/report_model.php  line number: 1272

your $questiondata variable doesn't initialized (first error). consequently, pass non-set varable report_model's get_response_question(), produces second error.

apparently, neither

    isset($_post['submit']) && $_post['submit'] == 'generate report'

nor

    empty($_post['questions'])

is true.

try setting $questiondata default value before ifs.

edit, respond comments: avoid errors, do

    $data['survey_details'] = $this->session->store['survey'];     $questiondata="i'm fallback!"; // <---- see?     if (isset($_post['submit']) && $_post['submit'] == 'generate report')

...which answers original question.


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