How do you retrieve an array based on user input? - php

Question

This is the data in the text file contain the data
I have already store the data in the array
enter image description here
<?php
if (!(isset($_GET['job_title']) && empty($_GET['job_title']))) {
$job_title = $_GET['job_title'];
echo $job_title;
$filename = __DIR__ . '/jobpost.txt';
if (file_exists($filename)) {
$data= null;
$allData = array();
$handle = fopen($filename, "r");
while (!feof($handle)) {
$onedata = fgets($handle);
if ($onedata != "") {
$data = explode("\t", $onedata);
$allData[] = $data;
}
}
echo "<pre>";
print_r($allData);
echo "</pre>";
} else {
echo "file does not exist";
}
} else {
echo "<p class=\"bg_danger\"> must enter the job title </p>";
}
?>
My question is when user enter an input "software engineering" and based on the input value, must retrieve the related the array.

Answer 1

First don't forget to filter/sanitize your user inputs.
Now Check while storing data into the array if you can create a array with keys as "software engineering"
if that's not possible you can loop through array once & create array you need
$arrNewDataArray = [];
foreach( $dataArray as $arr ){
$arrNewDataArray[$arr[1]] = $arr;
}
Then you will be able to check if user input value is present in the array & retrieve it like below.
$userinput = 'software engineering';
$arrayYouNeed = [];
if( isset( $arrNewDataArray[$userinput] ) ) {
$arrayYouNeed = $arrNewDataArray[$userinput];
}