Find Strings in Text Files in PHP

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0

I have a file called "test.txt" inside it has several words, I have an input where I get the word inserted and I would like to check if that word is contained within this ".txt file".

Someone knows how to do it?

php string txt php-7

3 answers

2


PHP

if( strpos(file_get_contents("texto.txt"),$_POST['palavra']) !== false) {
    echo "tem";
}else{
    echo "não tem";
}

HTML

<form action="" method="post">
<input type="text" name="palavra"> 
<input type="submit" name="botao" value="Verificar"> 
</form>

strpos - Finds the position of the first occurrence of a string

file_get_contents is the preferred method to read the contents of a file in a string.

1

<?php

$linhas= file("C:\\Documents and Settings\\myfile.txt");

foreach($linhas as $linha)
{
    echo($linha);
    /* Aqui compara a string */
}

?>

Or if you know the line in which the word is

$arq  = fopen($arquivo, 'r');
    while (!feof($arq)) {
      $linha = fgets($arq); // cria um array com o conteudo da linha atual do arquivo 
      if ((substr($linha, 23, 1) == 'palavra') ) {
          /* 23 - onde começa a palavra */
          /* 1 - número de letras */
          /* faz o que precisa */
      }  
   }

This way, PHP passes line by line, so you just have to compare with a regex or string if the word is equal.

https://secure.php.net/manual/en/function.file.php

0

Hello you can make use of the file_get_contents together with the strpos and the strtolower of PHP.

Here is an example of how it can be done:

<?php
   $arquivo = strtolower(file_get_contents('teste.txt'));
   $textoBuscar = strtolower($_POST['nome_do_input']);
   if(isset($_POST)) {
     if(strpos($arquivo, $textoBuscar) !== FALSE) {
       echo '<h1>Existe a palavra ' . $_POST['nome_do_input'] . ' no teste.txt</h1>';
     } else {
       echo '<h1>Não Existe a palavra ' . $_POST['nome_do_input'] . ' no teste.txt</h1>';
     }
   }
?>

<form method="POST">
  <input type="text" placeholder="Digite o que deseja consultar" />
  <input type="submit" value="Buscar" />
</form>

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