Data truques e ajustes Ajuste de horário

timezone.php

<?php
date_default_timezone_set("Brazil/East");
//echo strtotime(date('Y-m-d H:i:s',time())); exemplo de redundancia

 //BUSCA SQL DE UMA DATA MENOR NAO TIMESTAMP
 ->where('UNIX_TIMESTAMP(STR_TO_DATE(DATA,"%d/%m/%Y")) <',now())
 
date("d/m/Y H:i:s a",time());  //30/12/2013 23:50:15 pm

//VARIOS DIAS
$timestamp = time();
$dias = ($timestamp)/(60*60*24)

//CONVERTE DATA PADRAO PARA TIMESTAMP
$a = strptime($valor, '%d/%m/%Y');
    $timestamp = mktime(0, 0, 0, $a['tm_mon']+1, $a['tm_mday'], $a['tm_year']+1900);
    $aux  = ($timestamp < now()) ? 'background-color:#FDD5D5;' : '';



//CONVERTER DATA INPUT PARA DATETIME
15/12/2013
$date = date("Y-m-d H:i:s",strtotime(str_replace('/','-',$data)));

//CONVER DATATIME PARA STRING
date("d/n/Y", strtotime("2009-10-04 22:23:00"))
date("d/n/Y", strtotime("+1 day"))

?>