{"id":218,"date":"2015-04-23T12:47:37","date_gmt":"2015-04-23T15:47:37","guid":{"rendered":"https:\/\/www.kinghost.com.br\/wiki\/?post_type=article&#038;p=218"},"modified":"2021-06-17T14:15:52","modified_gmt":"2021-06-17T17:15:52","slug":"php-notice-undefined-index","status":"publish","type":"article","link":"https:\/\/king.host\/wiki\/artigo\/php-notice-undefined-index\/","title":{"rendered":"PHP Notice: Undefined Index"},"content":{"rendered":"\n<p>Est\u00e1 como erro undefined index em sua aplica\u00e7\u00e3o PHP? Veja algumas informa\u00e7\u00f5es que podem te ajudar a corrigir esta dificuldade.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">QUAL O MOTIVO DO ERRO?<\/h2>\n\n\n\n<p>Esse erro ocorre quando \u00e9 feita a tentativa de acessar um \u00edndice inexistente de um array \u2013 Geralmente acontece quando se usa <strong>Query String<\/strong>.<br>\nC\u00f3digo de exemplo:\n<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\" lang=\"wp-block-preformatted\">&lt;?php<br>$hoje = $_GET['hoje'];<br>?&gt; <\/pre>\n\n\n\n<p>A mensagem de erro deve resultar o seguinte:\n<\/p>\n\n\n\n<div class=\"alerta\">PHP Notice: Undefined index: hoje in sua-pagina.php on line 2<\/div>\n\n\n\n<p>Neste caso, n\u00e3o existe a vari\u00e1vel (no exemplo, <font color=\"#5780b7\">hoje<\/font>) na URL.<br>\n<i class=\"fa fa-long-arrow-right\"><\/i> Pode ser facilmente resolvido com a fun\u00e7\u00e3o <font color=\"#5780b7\"><b>isset<\/b><\/font>.<br>\n<font color=\"#808080\">C\u00f3digo de exemplo para solu\u00e7\u00e3o do caso:<\/font>\n<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\" lang=\"wp-block-preformatted\">&lt;?php<br>if ( isset( $_GET['hoje'] ) )<br>{<br>&nbsp;&nbsp;&nbsp;&nbsp;$hoje = $_GET['hoje'];<br>}<br>else<br>{<br>&nbsp;&nbsp;&nbsp;&nbsp;$hoje = 'valor padr\u00e3o';<br>?&gt;<br><\/pre>\n","protected":false},"author":9,"featured_media":0,"menu_order":41,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","article-category":[173],"article-tag":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/article\/218"}],"collection":[{"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/article"}],"about":[{"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/types\/article"}],"author":[{"embeddable":true,"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/comments?post=218"}],"version-history":[{"count":0,"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/article\/218\/revisions"}],"wp:attachment":[{"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/media?parent=218"}],"wp:term":[{"taxonomy":"article-category","embeddable":true,"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/article-category?post=218"},{"taxonomy":"article-tag","embeddable":true,"href":"https:\/\/king.host\/wiki\/wp-json\/wp\/v2\/article-tag?post=218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}