CODEWITHSUNDEEP
php
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Reputation: 23

Need to get multiple lines from a text file and compare to a sentence

I wrote PHP code that checks if a word is in a sentence or not.

I've written this code:

<?php 
$text = "I go to school";
$word = file_get_contents("bad.txt");
if (strpos($text,$word)) {
    echo 'true';
}
?>

But it doesn't work because the txt file look like this: 

test
hola
owb

How can I make the code check the words on each line against the sentence instead of one line only?

Upvotes: 2

Views: 662

Answers (1)

Dylan James McGannon
Dylan James McGannon

Reputation: 944

Use a loop to check each line at a time, like so:

$text = "I go to school";
$file = file("bad.txt");

foreach($file as $line) {
    if (strpos($line, $text) !== false) {
        echo 'true';
    }
}

Edit1: file_get_content() to file()

Edit2: swap the paramaters of strpos()

Edit3: use: strpos($line, $text) !== false

Edit4: I see I've misunderstood the question. You want to check if the input contains any of the words stored in the file (instead of the other way around as I had assumed).

Try this:

$text = $_GET['name'];
$file = file("bad.txt");

foreach($file as $line) {
    if (strpos($text, $line) !== false) {
        echo 'Found';
        exit;
    }
}
echo 'Not Found';

Edit5: Turns out the '\n' control character is included in the line. so you need to use strpos($text, trim($line) !== false).

$text = $_GET['name'];
$file = file("bad.txt");

foreach($file as $line) {
    if (strpos($text, trim($line)) !== false) {
        echo 'Found';
        exit;
    }
}
echo 'Not Found';

Upvotes: 1

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