<?php

/*
	SELECT `tarih` FROM `veriler` ORDER BY `tarih` ASC LIMIT 0, 1; -- İlk girilen veri
	SELECT `tarih` FROM `veriler` ORDER BY `tarih` DESC LIMIT 0, 1; -- Son girilen veri
*/

	$first_record_inserted_at = null;
	$last_record_inserted_at = null;

	$first_record_resource = mysql_query("SELECT `tarih` FROM `veriler` ORDER BY `tarih` ASC LIMIT 0, 1");
	$last_record_resource = mysql_query("SELECT `tarih` FROM `veriler` ORDER BY `tarih` DESC LIMIT 0, 1");

	if(mysql_error($first_record_resource) === 0)
	{
		while($first_record_row = mysql_fetch_assoc($first_record_resource))
		{
			$first_record_inserted_at = $first_record_row["tarih"];
		}
	}

	if(mysql_error($last_record_resource) === 0)
	{
		while($last_record_row = mysql_fetch_assoc($last_record_resource))
		{
			$last_record_inserted_at = $last_record_row["tarih"];
		}
	}

	print_r(
		array(
			"first_record_inserted_at" => $first_record_inserted_at,
			"last_record_inserted_at" => $last_record_inserted_at
		)
	);