Search word with file_get_contents

You can use preg_match_all() to do this search, the results are stored in the third argument ( $matches ).

<?php
   $content = file_get_contents( 'https://www.hostgator.com.br' );
   $regex = '/equipe/';
   preg_match_all($regex, $content, $matches);

   echo "<pre>";
   print_r($matches);

Use the strpos function to find the first occurrence of the string.

$content = file_get_contents( 'https://www.hostgator.com.br' );


if (strpos($content, 'equipe') !== FALSE) {
    echo "tem a palavra";
}

If you need to find the word that is case-sensitive, you can use stripos .

Regular expressions are often slower. If the string is just a specific word, you can choose strpos , which is simpler.

It can be done in the following ways, and it has many other ways:

In that first one, going through line by line and giving echo in words found:

<?php

$fileContent = file_get_contents('https://pt.wikipedia.org/wiki/Equipe');

foreach (preg_split('/\n/', $fileContent) as $value) {

  $pattern = '/equipe/';//Padrão a ser encontrado na string $fileContent
  if (preg_match_all($pattern, $value, $matches)) {

    foreach ($matches[0] as $matche) {

      echo $matche . '<br>';

    }

  }

}

Or also this way by searching the entire string:

<?php

$fileContent = file_get_contents('https://pt.wikipedia.org/wiki/Equipe');

$pattern = '/equipe/';//Padrão a ser encontrado na string $value
if (preg_match_all($pattern, $fileContent, $matches)) {

  foreach ($matches[0] as $matche) {
    echo $matche . '<br>';
  }

}