Php error with an array

I have this code:
$ckd_sels = array();
	$nc = 0;
	for ($i = 0; $i < $ns; $i++) {
		$s = mysqli_fetch_array($ress,MYSQLI_ASSOC);
		$cbnam = $s['pid'] . "-" . $s['ruid'] . "-" . $s['selno'];
		$ck = "ck" . $cbnam;
		echo "ck + cbnam = " . $ck . "<br>";
		echo  "checked = " . $_POST[$ck] . "<br>";
		if ($_POST[$ck] == "on") {
			echo "post-ck = " . $_POST[$ck] . "<br>";
			$ckd_sels[$i] = $ck;
			echo "ckdcells = " . $ckd_sels[$i] . "<br>";
	echo "ckd_sels array = " . $ckd_sels . "<br>";
	$_SESSION['ckdsels'] = $ckd_sels;

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The last part of the output looks like the attached. Something is wrong with my array definition (I think)

Any help?
Richard KortsBusiness Owner / Chief DeveloperAsked:
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$ckd_sels is an array.  If you want to see its contents, try using implode:
echo "ckd_sels array = " . implode('; ', $ckd_sels) . "<br>";

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Zakaria AcharkiAnalyst DeveloperCommented:
Hi Richard,

You can't show an array using echo with concatenated string, you need to use :

echo $ckd_sels;

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If you want to show the content of an array inline you may need to convert it to string first using implode or json_encode.
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