First of all let's make mistakes.
The first is in the way you are opening the file. According to the PHP documentation, w is only used for file creation.
In your case, the correct mode is a + . This mode will allow you to open the file for writing and reading.
The second is in the name of the variable $ess , it does not exist. The correct one would be $txt
The third error is in the " Participating? " button, since it is inside form and is set to submit , so it has the function to send textarea content % for url /salvar.php
Now, let's go to the solutions.
One way to add new information to the file is, as I explained earlier, to use a + mode with the fopen function.
Another way is to use the file_put_contents function. This function will allow you to create a file or add new information to it.
When correcting the problem of the " Attending?" button, you also have two options:
Create a button with type:button and with click event, you call a request with XMLHttpRequest
Create a anchor that can take you to url /ler_arquivo.php , for example.
How to do
I hope you can read the comments of the files very carefully. It is my intention that this code can assist you in understanding the solution.
I hope you also read the links I left at the end to get to know more about it and choose the best option for your code.
index.html
<form action="salvar.php" method="post">
<center>
<center>
<br><h2 style="font: Ventana; text-shadow: 0 0 0.1em gray; color:gray;"><font face="Candara"><font color="redyellow">{Sorteador Skins}</font></h2>
<br><h2 style="font: Ventana; text-shadow: 0 0 0.1em gray; color:gray;"><font face="Candara"><font color="purpleyellow">[Boa Sorte]</font></h2>
<br><h2 style="font: Ventana; text-shadow: 0 0 0.1em gray; color:gray;"><font face="Candara"><font color="purple">(By: PumP)</font></h2>
</center>
<textarea required name="ccs" id="ccs" placeholder="Insira seu nick :)" type="text" class="form-control" style="max-width: 800px; min-width: 800px; min-height: 200px; max-height: 200px; text-align: center; resize: none; color: red; background-color: #2b323d"></textarea>
<br>
<br>
<center>
<input type="submit" id="enviar" class="btn btn-danger" value="Cadastrar">
<br>
<br>
<input type="button" id="participantes" class="btn btn-sucess" value="Participando?">
</form>
<script>
var participantes = document.querySelector("#participantes");
var textarea = document.querySelector("#ccs");
participantes.addEventListener("click", function() {
/* Cria o objeto responsável pela requisição */
var req = new XMLHttpRequest();
/*
* Adiciona um evento para capturar os dados quando a
* requisição for finalizada e joga-las no textarea
*/
req.addEventListener("loadend", function(result) {
textarea.value = result.target.response;
});
/* Abre a conexão com o servidor */
req.open("GET", "capturar_arquivo.php");
/* Envia o pedido */
req.send();
});
</script>
save.php
<?php
$filename = "arquivo.txt";
/*
* Verifica se o conteúdo da textarea 'ccs' foi enviado
* Essa condição irá evitar erros
*/
if (isset($_POST["ccs"])) {
/* Captura o conteúdo enviado */
$ccs = $_POST["ccs"];
/*
* Abre o arquivo com o modo a+
* Esse modo permite abrir o arquivo
* tanto para o modo de leitura, quanto
* para o modo de escrita, além de colocar
* o ponteiro no final do arquivo.
*/
$file = fopen($filename, "a+");
/*
* Escreve o conteúdo enviado e adiciona
* uma quebra de linha no arquivo.
*/
fwrite($file, $ccs);
fwrite($file, PHP_EOL);
/**
* Fecha o arquivo
*/
fclose($file);
/**
* Caso você opte pela função 'file_put_contents',
* estou deixando o link da documentação para você
* dar uma estudada.
*/
/**
* Volta para a página index.html
*/
header("Location: index.html");
}
capture_file.php
There are 3 simple ways to capture the contents of a file.
I'll post all three, but I'll leave two of them, I'll just quote. I'll leave the link so you can read more about them.
I hope you can read the documentation that I will leave
to be able to choose better.
<?php
$filename = "arquivo.txt";
/* ************************************* */
/* Forma 1 */
/* ************************************* */
/**
* Arquivo o arquivo no modo somente leitura
*/
$file = fopen($filename, "r");
/* Variável onde ficará o conteúdo do arquivo */
$content = "";
/**
* "Divide" o arquivo em várias partes de 1024 bytes
* e depois percorre todas elas, juntando-as.
*/
while (($line = fread($file, 1024)) != false) {
$content .= $line;
}
/* ************************************* */
/* Forma 2 - Irei deixar comentada */
/* ************************************* */
// Aqui você pode utilizar a função "file_get_contents"
/* ************************************* */
/* Forma 3 - Irei deixar comentada */
/* ************************************* */
// Aqui você poderá utilizar a função "file" e "implode"
/* Imprime o conteúdo na tela */
echo $content;
Links:
