How to search in particular lines of txt file with php - php

Question

I store data from an article in a .txt file.
A txt file looks like this:
id_20201010120010 // id of article
Sport // category of article
data/uploads/image-1602324010_resized.jpg // image of article
Champions League // title of article
Nunc porttitor ut augue sit amet maximus... // content of the article
2020-10-10 12:00 // date article
John // author of article
oPXWlZp+op7B0+/v5Y9khQ== // encrypted email of author
football,soccer // tags of article
true // boolean (SHOULD BE IGNORED WHEN SEARCHING)
false // boolean (SHOULD BE IGNORED WHEN SEARCHING)
For searching in articles, is use this code below:
$searchthis = strtolower('Nunc');
$searchmatches = [];
foreach($articles as $article) { // Loop through all the articles
$handle = #fopen($article, "r");
if ($handle) {
while (!feof($handle)) {
$buffer = fgets($handle);
if(strpos(strtolower($buffer), $searchthis) !== FALSE) { // strtolower; search word not case sensitive
$searchmatches[] = $article; // array of articles with search matches
}
}
fclose($handle);
}
}
//show results:
if(empty($searchmatches)) { // if empty array
echo 'no match found';
}
print_r($searchmatches);
This works all fine! But when searching on a word like true, he finds almost all articles because in all articles are the 2 booleans at the last lines. So how can i skip these 2 last lines of the txt file from searching?

Answer 1

One way to do this would be to use file to read the entire file into an array, then array_slice to strip the last two elements from the array. You can then iterate through the array looking for the search value. Note you can use stripos to do a case-insensitive search:
foreach ($articles as $article) {
$data = file($article);
if ($data === false) continue;
$data = array_slice($data, 0, -2);
$search = 'league';
foreach ($data as $value) {
if (stripos($value, $search) !== false) {
$searchmatches[] = $article;
}
}
}

Answer 2

To read your file, instead of using fopen, fgets, etc, like with some C code, just use the file() function. It will read all the file and put it inside an array of lines. Then select the lines where you want to do a search.
<?php
$article = file('article-20201010120010.txt');
// Access each information of the article you need directly.
$id = $article[0];
$category = $article[1];
// etc...
// Or do it like this with the list() operator of PHP:
list($id, $category, $image, $title, $content, $date, $author, $email_encrypted, $tags, $option_1, $option_2) = $article;
// Now do the insensitive seach in the desired fields.
$search = 'porttitor'; // or whatever typed.
if (($pos = stripos($content, $search)) !== false) {
print "Found $search at position $pos\n";
} else {
print "$search not found!\n";
}