Search for data in CSV with input form - php

Question

I have a script like that:
$value = $_POST['number']; // searching with input named number
$csv = array();
$file = fopen('data.csv', 'r');
while (($result = fgetcsv($file)) !== false)
{
$csv[] = $result;
}
if (in_array($value, $csv)) {
echo "found";
}
else {
echo "not found";
}
fclose($file);
Basically, I always get an answer "not found". Is there any way I could search in CSV file like that?

Answer 1

There's no need to iterate twice, you can get a line from csv and immediately search for $value:
$value = $_POST['number']; // searching with input named number
$file = fopen('data.csv', 'r');
$found = false;
while (($result = fgetcsv($file)) !== false)
{
if (in_array($value, $result)) {
$found = true;
break;
}
}
if ($found) {
echo "found";
}
else {
echo "not found";
}
fclose($file);

Answer 2

AFAIK, in_array only support single dimension array. And your $csv is 2-dimensional. If you have multiple rows of numbers in the CSV file, you'd probably need to search them row by row.
<?php
$value = $_POST['number']; // searching with input named number
$csv = array();
$file = fopen('data.csv', 'r');
while (($result = fgetcsv($file)) !== false)
{
$csv[] = $result;
}
fclose($file);
$found = false;
foreach ($csv as $row) {
if (in_array($value, $row)) {
$found = true;
break;
}
}
if ($found) {
echo "found";
} else {
echo "not found";
}