Cakephp CSV helper generating leading space - php

Question

I'm creating a CSV file using CakePHP CSV helper.
I'm always getting one space at the beginning of the column. I have used trim, ltrim but nothing works.
I have also added ob_start and ob_end_clean but nothing works.
My CSV code is
<?php
class CsvHelper extends AppHelper {
var $delimiter = ',';
var $enclosure = '"';
var $filename = 'Export.csv';
var $line = array();
var $buffer;
function CsvHelper() {
$this->clear();
}
function clear() {
$this->line = array();
$this->buffer = fopen('php://temp/maxmemory:' . (5 * 1024 * 1024), 'r+');
}
function addField($value) {
$this->line[] = $value;
}
function endRow() {
$this->addRow($this->line);
$this->line = array();
}
function addRow($row) {
fputcsv($this->buffer, $row, $this->delimiter, $this->enclosure);
}
function renderHeaders() {
ob_start();
header('Content-Encoding: UTF-16LE');
header('Content-Type: text/csv; charset=UTF-8');
header("Content-type:application/vnd.ms-excel");
header('Content-Disposition: attachment; filename="' . $this->filename . '"');
header("Pragma: no-cache");
header("Expires: 0");
ob_end_clean();
}
function setFilename($filename) {
$this->filename = $filename;
if (strtolower(substr($this->filename, -4)) != '.csv') {
$this->filename .= '.csv';
}
}
function render($outputHeaders = true, $to_encoding = null, $from_encoding = "auto") {
if ($outputHeaders) {
if (is_string($outputHeaders)) {
$this->setFilename(trim($outputHeaders));
}
$this->renderHeaders();
}
rewind($this->buffer);
$output = stream_get_contents($this->buffer);
if ($to_encoding) {
$output = mb_convert_encoding($output, $to_encoding, $from_encoding);
}
return $this->output(trim($output));
}
}
?>
I'm calling this helper from this ctp file to download and generate report.
<?php
$line = $gen_reports[0]['Report'];
$arrayKeys = array_keys($line);
$this->CSV->addRow($arrayKeys);
echo $this->CSV->render("filename");die;
?>
and the result I'm getting always a leading space at the very first column:
How can I get rid of this space?

Answer 1

Not sure if only a copy-paste error but you have an extra space right before your CsvHelper opening php tag which could result in a space in the output buffer.