{"id":1038,"date":"2024-05-20T19:51:30","date_gmt":"2024-05-20T22:51:30","guid":{"rendered":"https:\/\/thiagorossi.com.br\/blog\/?p=1038"},"modified":"2025-12-02T17:03:26","modified_gmt":"2025-12-02T20:03:26","slug":"datas-no-php","status":"publish","type":"post","link":"https:\/\/thiagorossi.com.br\/blog\/datas-no-php\/","title":{"rendered":"Datas no PHP"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Tempo de leitura: <\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutos<\/span><\/span>\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Datas no PHP<\/strong>: O gerenciamento de datas e hor\u00e1rios \u00e9 uma necessidade universal em aplica\u00e7\u00f5es web, desde registrar o momento de uma transa\u00e7\u00e3o at\u00e9 agendar tarefas futuras. O <strong>PHP<\/strong> fornece ferramentas duais para essa tarefa: um conjunto de <strong>fun\u00e7\u00f5es b\u00e1sicas<\/strong> herdadas e a classe moderna <strong><code>DateTime<\/code><\/strong>, que oferece uma abordagem mais orientada a objetos, robusta e consciente de fusos hor\u00e1rios.<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">1. \ud83d\udcc5 Fun\u00e7\u00f5es B\u00e1sicas de Data e Tempo<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">As fun\u00e7\u00f5es legadas (<code>date<\/code>, <code>time<\/code>, <code>strtotime<\/code>) s\u00e3o \u00fateis para tarefas r\u00e1pidas, mas s\u00e3o baseadas no <strong>Timestamp Unix<\/strong>, que \u00e9 o n\u00famero de segundos desde 1\u00ba de janeiro de 1970 (Era Unix).<\/p>\n\n\n\n<figure class=\"wp-block-table has-medium-font-size\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Fun\u00e7\u00e3o<\/strong><\/td><td><strong>Prop\u00f3sito<\/strong><\/td><td><strong>Exemplo PHP<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong><code>time()<\/code><\/strong><\/td><td>Retorna o <strong>timestamp Unix<\/strong> atual (inteiro).<\/td><td><code>echo time();<\/code><\/td><\/tr><tr><td><strong><code>date(formato, timestamp)<\/code><\/strong><\/td><td>Formata um timestamp em uma <em>string<\/em> leg\u00edvel. Se <code>$timestamp<\/code> for omitido, usa o tempo atual.<\/td><td><code>echo date(\"d\/m\/Y H:i:s\");<\/code><\/td><\/tr><tr><td><strong><code>strtotime(string)<\/code><\/strong><\/td><td>Converte uma <em>string<\/em> de data leg\u00edvel (em ingl\u00eas) para um <strong>timestamp Unix<\/strong>.<\/td><td><code>$ts = strtotime(\"tomorrow\");<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Exemplo de Convers\u00e3o<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">PHP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\/\/ Converter uma string para timestamp\n$timestamp = strtotime(\"2023-11-29 10:30:00\");\n\n\/\/ Usar o timestamp para formatar a data\necho date(\"d\/m\/Y\", $timestamp); \/\/ Sa\u00edda: 29\/11\/2023\n?&gt;\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">2. \ud83d\udd70\ufe0f A Classe <code>DateTime<\/code>: Orienta\u00e7\u00e3o a Objetos<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">A classe <strong><code>DateTime<\/code><\/strong> e suas classes relacionadas s\u00e3o a maneira <strong>preferida<\/strong> e mais poderosa de lidar com datas em PHP moderno, pois oferecem controle total sobre fusos hor\u00e1rios e c\u00e1lculos complexos.<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">A. Cria\u00e7\u00e3o e Formata\u00e7\u00e3o<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Para usar <code>DateTime<\/code>, voc\u00ea cria um objeto, que encapsula a data e hora.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">PHP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\/\/ 1. Criar um objeto DateTime (data e hora atuais)\n$data = new DateTime();\n\n\/\/ 2. Formatar a sa\u00edda (utilizando o m\u00e9todo format())\necho $data-&gt;format('Y-m-d H:i:s'); \/\/ Ex: 2025-12-02 19:38:00\n\n\/\/ 3. Criar com uma data espec\u00edfica\n$dataEspecifica = new DateTime('2024-05-15');\necho $dataEspecifica-&gt;format('l, d\/m\/Y'); \/\/ Ex: Wednesday, 15\/05\/2024\n?&gt;\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">B. Fusos Hor\u00e1rios (<code>DateTimeZone<\/code>)<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">A classe <code>DateTime<\/code> \u00e9 <em>time zone aware<\/em> (consciente de fuso hor\u00e1rio), garantindo precis\u00e3o em sistemas globais.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">PHP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\/\/ Criar um objeto DateTime com fuso hor\u00e1rio espec\u00edfico\n$fusoBrasilia = new DateTimeZone('America\/Sao_Paulo');\n$data = new DateTime('now', $fusoBrasilia);\n\necho $data-&gt;format('Y-m-d H:i:s T'); \/\/ 'T' mostra a abrevia\u00e7\u00e3o do fuso.\n?&gt;\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">3. \u2795 C\u00e1lculos de Data e Intervalos<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Em vez de manipular <em>timestamps<\/em> manualmente para somar ou subtrair per\u00edodos, a classe <strong><code>DateInterval<\/code><\/strong> permite c\u00e1lculos sem erros.<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">A. Modificando Datas (<code>add<\/code> e <code>sub<\/code>)<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Voc\u00ea usa <strong><code>DateInterval<\/code><\/strong> para definir o per\u00edodo que deseja adicionar ou subtrair. O formato do intervalo (<code>P1M<\/code>) segue o padr\u00e3o ISO 8601, onde <code>P<\/code> significa Per\u00edodo, <code>Y<\/code> ano, <code>M<\/code> m\u00eas, <code>D<\/code> dia.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">PHP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$dataAtual = new DateTime();\necho \"Data Inicial: \" . $dataAtual-&gt;format('Y-m-d') . \"&lt;br&gt;\";\n\n\/\/ Adiciona 1 m\u00eas (P1M)\n$dataAtual-&gt;add(new DateInterval('P1M')); \necho \"Ap\u00f3s Adicionar 1 M\u00eas: \" . $dataAtual-&gt;format('Y-m-d') . \"&lt;br&gt;\";\n\n\/\/ Subtrai 5 dias (P5D)\n$dataAtual-&gt;sub(new DateInterval('P5D')); \necho \"Ap\u00f3s Subtrair 5 Dias: \" . $dataAtual-&gt;format('Y-m-d');\n?&gt;\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">B. Diferen\u00e7a entre Datas (<code>diff<\/code>)<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">O m\u00e9todo <strong><code>diff()<\/code><\/strong> retorna um objeto <strong><code>DateInterval<\/code><\/strong> que representa a diferen\u00e7a exata entre duas datas.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">PHP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n$data1 = new DateTime('2023-11-29');\n$data2 = new DateTime('2023-12-10');\n\n\/\/ Calcula a diferen\u00e7a entre data2 e data1\n$intervalo = $data2-&gt;diff($data1);\n\n\/\/ O m\u00e9todo format() do DateInterval usa especificadores com '%'\necho $intervalo-&gt;format('O intervalo \u00e9 de %a dias (ou %y anos, %m meses e %d dias).'); \n\/\/ Sa\u00edda: O intervalo \u00e9 de 11 dias (ou 0 anos, 0 meses e 11 dias).\n?&gt;\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">4. \ud83d\udcdd Tabela de Formata\u00e7\u00e3o Comum<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">O m\u00e9todo <strong><code>format()<\/code><\/strong> aceita diversas letras para personalizar a sa\u00edda da data e hora.<\/p>\n\n\n\n<figure class=\"wp-block-table has-medium-font-size\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Formato<\/strong><\/td><td><strong>Descri\u00e7\u00e3o<\/strong><\/td><td><strong>Exemplo de Sa\u00edda<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong><code>d\/m\/Y<\/code><\/strong><\/td><td>Data (dia\/m\u00eas\/ano com 4 d\u00edgitos)<\/td><td>02\/12\/2025<\/td><\/tr><tr><td><strong><code>Y-m-d H:i:s<\/code><\/strong><\/td><td>Formato SQL \/ ISO 8601<\/td><td>2025-12-02 19:38:00<\/td><\/tr><tr><td><strong><code>l<\/code><\/strong><\/td><td>Nome completo do dia da semana<\/td><td>Tuesday<\/td><\/tr><tr><td><strong><code>F<\/code><\/strong><\/td><td>Nome completo do m\u00eas<\/td><td>December<\/td><\/tr><tr><td><strong><code>a<\/code><\/strong> ou <strong><code>A<\/code><\/strong><\/td><td>am\/pm em min\u00fasculo ou mai\u00fasculo<\/td><td>pm ou PM<\/td><\/tr><tr><td><strong><code>U<\/code><\/strong><\/td><td>Timestamp Unix (segundos)<\/td><td>1701358080<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">5. \u2705 Boas Pr\u00e1ticas<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-medium-font-size\"><strong>Prefira <code>DateTime<\/code>:<\/strong> Utilize a classe <code>DateTime<\/code> e seus m\u00e9todos para qualquer manipula\u00e7\u00e3o de datas, pois \u00e9 menos propensa a erros do que a manipula\u00e7\u00e3o manual de <em>timestamps<\/em>.<\/li>\n\n\n\n<li class=\"has-medium-font-size\"><strong>Defina o Fuso Hor\u00e1rio Padr\u00e3o:<\/strong> Use a fun\u00e7\u00e3o <code>date_default_timezone_set('Seu\/Fuso')<\/code> no in\u00edcio do <em>script<\/em> (ou no arquivo de configura\u00e7\u00e3o) para garantir que todas as opera\u00e7\u00f5es de data usem o fuso hor\u00e1rio correto.<\/li>\n\n\n\n<li class=\"has-medium-font-size\"><strong>Valide Entradas:<\/strong> Sempre valide <em>strings<\/em> de data fornecidas pelo usu\u00e1rio antes de tentar convert\u00ea-las em objetos <code>DateTime<\/code>.<\/li>\n\n\n\n<li class=\"has-medium-font-size\"><strong>Utilize <code>DateInterval<\/code>:<\/strong> Para somar ou subtrair per\u00edodos, use <code>add()<\/code> ou <code>sub()<\/code> com <code>DateInterval<\/code> em vez de tentar c\u00e1lculos manuais.<\/li>\n<\/ul>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">\u2705 Conclus\u00e3o Datas no PHP<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Datas no PHP:<\/strong> O manejo de datas no PHP exige a compreens\u00e3o das fun\u00e7\u00f5es b\u00e1sicas (para <em>timestamps<\/em> r\u00e1pidos) e, crucialmente, o dom\u00ednio da abordagem orientada a objetos da classe <strong><code>DateTime<\/code><\/strong>. Ao utilizar <code>DateTime<\/code> em conjunto com <strong><code>DateInterval<\/code><\/strong> e <strong><code>DateTimeZone<\/code><\/strong>, voc\u00ea garante que suas aplica\u00e7\u00f5es realizem c\u00e1lculos de tempo de forma <strong>precisa<\/strong>, <strong>escal\u00e1vel<\/strong> e <strong>consciente de fuso hor\u00e1rio<\/strong>.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Toda jornada tem um in\u00edcio, e o in\u00edcio para se tornar um desenvolvedor back-end \u00e9 dominar as seguintes tecnologias, que voc\u00ea encontra aqui mesmo:<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"\/category\/sql\"><img loading=\"lazy\" decoding=\"async\" width=\"758\" height=\"426\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/05\/Capa-Artigos-2.webp\" alt=\"SQL\" class=\"wp-image-942\" srcset=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/05\/Capa-Artigos-2.webp 758w, https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/05\/Capa-Artigos-2-300x169.webp 300w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/a><figcaption class=\"wp-element-caption\">SQL<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"\/category\/php\"><img loading=\"lazy\" decoding=\"async\" width=\"758\" height=\"426\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/11\/Capa-PHP.png\" alt=\"Capa Curso PHP\" class=\"wp-image-2835\" srcset=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/11\/Capa-PHP.png 758w, https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/11\/Capa-PHP-300x169.png 300w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/a><figcaption class=\"wp-element-caption\">PHP<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"\/category\/laravel\"><img loading=\"lazy\" decoding=\"async\" width=\"758\" height=\"426\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/11\/Laravel.webp\" alt=\"Laravel\" class=\"wp-image-1642\" srcset=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/11\/Laravel.webp 758w, https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/11\/Laravel-300x169.webp 300w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/a><figcaption class=\"wp-element-caption\">Laravel<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">E se voc\u00ea gosta do nosso conte\u00fado, n\u00e3o deixe de contribuir adquirindo os servi\u00e7os e produtos dos nossos apoiadores e empresas que somos associados:<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/hostinger.com.br\/?REFERRALCODE=1THIAGO62\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"250\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/03\/hostinger.png\" alt=\"Hospedagem Hostinger\" class=\"wp-image-92\"\/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/amzn.to\/3SNDYlc\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"250\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/08\/ofertas-amazon.webp\" alt=\"Ofertas Amazon\" class=\"wp-image-1308\"\/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/amzn.to\/3SNKmt0\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"250\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/08\/amazonprime.webp\" alt=\"Amazon Prime\" class=\"wp-image-1307\"\/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Tempo de leitura: <\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutos<\/span><\/span>Datas no PHP: O gerenciamento de datas e hor\u00e1rios \u00e9 uma necessidade universal em aplica\u00e7\u00f5es&#8230;<\/p>\n","protected":false},"author":1,"featured_media":2835,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-1038","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php","wpcat-11-id"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Datas no PHP - BLOG THIAGO ROSSI<\/title>\n<meta name=\"description\" content=\"Datas no PHP: Neste artigo, exploraremos as principais ferramentas para manipular datas em PHP, desde as fun\u00e7\u00f5es b\u00e1sicas at\u00e9 a classe ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thiagorossi.com.br\/blog\/datas-no-php\/\" \/>\n<meta property=\"og:locale\" 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