Echo selective data (rows) from multidimensional array in PHP - php

I have an array coming from a .csv file. These are coming from a real estate program. In the second column I have the words For Sale and in the third column the words For Rent that are indicated only on the rows that are concerned. Otherwise the cell is empty. I want to display a list rows only For Sale for example. Of course then if the user clicks on a link in one of the rows, the appropriate page will be displayed.
I can't seem to target the text in the column, and I can't permit that the words For Sale be used throughout the entire array because they could appear in another column (description for example).
I have tried this, but to no avail.
/* The array is $arrCSV */
foreach($arrCSV as $book) {
if($book[1] === For Sale) {
echo '<div>';
}
echo '<div>';
echo $book[0]. '<br>';
echo $book[1]. '<br>';
echo $book[2]. '<br>';
echo $book[3]. '<br>';
echo $book[6]. '<br><br><br>';
echo '</div>';
}
I also tried this:
foreach($arrCSV as $key => $book) {
if($book['1'] == 'For Sale') {
echo '<div>';
}
echo '<div>';
echo $book[0]. '<br>';
echo $book[1]. '<br>';
echo $book[2]. '<br>';
echo $book[3]. '<br>';
echo $book[6]. '<br><br><br>';
echo '</div>';
}

Do you mean:
foreach($arrCSV as $key => $book) {
if($book['1'] == 'For Sale') {
echo '<div></div>';
}else{
echo '<div>';
echo $book[0]. '<br>';
echo $book[1]. '<br>';
echo $book[2]. '<br>';
echo $book[3]. '<br>';
echo $book[6]. '<br><br><br>';
echo '</div>';
}
}

I found a solution here:
PHP: Taking Array (CSV) And Intelligently Returning Information
$searchCity = 'For Sale'; //or whatever you are looking for
$file = file_get_contents('annonces.csv');
$results = array();
$lines = explode("\n",$file);
//use any line delim as the 1st param,
//im deciding on \n but idk how your file is encoded
foreach($lines as $line){
//split the line
$col = explode(";",$line);
//and you know city is the 3rd element
if(trim($col[1]) == $searchCity){
$results[] = $col;
}
}
And then:
foreach($results as $Rockband)
{
echo "<tr>";
foreach($Rockband as $item)
{
echo "<td>$item</td>";
}
echo "</tr>";
}
As you can see I'm learning. It turns out that by formulating a question, a series of similar posts are displayed, which is much quicker and easier than using google. Thanks.

Related

I am unsure what kind of loop to use in php

I am newer to PHP and I am able to get the desired output but I am doing it one index position at a time. I am returning data from a .txt file and I need to insert this data into an HTML table I am creating using PHP. BUT FIRST I need to be able to get the same output without typing out every index position. I tried to use a forloop but it kept outputting only one line.
I manually outputted the lines from the file and it works. What loop in PHP would be best to achieve the same results and output these elements? IMPORTANT, as is I am able to sort and rsort (I want to be able to do this so if it can be implemented in the loop that would be awesome) any help is more than I have right now.
PHP
$books = array();
if ($fp)
{
while(true)
{
$lines_in_file = count(file($filename));
$line = fgets($fp);
if (feof($fp))
{
break;
}
$line_ctr++;
list($title, $author, $pubdate, $isbn) = explode('*', $line);
$new_line = explode('*', $line);
for($ii= 1; $ii <= $lines_in_file; $ii++){
$lines = fgets($fp); //Read each line
$member = trim($lines);
array_push($books, $member);
}
//This foreach only brings back the first like in the txt file, why?
$cntr = 0;
foreach($books as $element){
$cntr++;
$table .= "<tr>";
$table .= "<td>".$title."</td>";
$table .= "<td>".$author."</td>";
$table .= "<td>".$pubdate."</td>";
$table .= "<td>".$pubdate."</td>";
$table .= "<td>".$isbn."</td>";
$table .= "</tr>\n"; //added newline
echo $element;
}
//sort($books);
// rsort($books);
echo $books[0];
echo "<br>";
echo $books[1];
echo "<br>";
echo $books[2];
echo "<br>";
echo $books[3];
echo "<br>";
echo $books[4];
echo "<br>";
echo $books[5];
echo "<br>";
echo $books[6];
echo "<br>";
echo $books[7];
echo "<br>";
echo $books[8];
echo "<br>";
echo $books[9];
echo "<br>";
echo $books[10];
echo "<br>";
echo $books[11];
echo "<br>";
echo $books[12];
echo "<br>";
echo $books[13];
echo "<br>";
echo $books[14];
echo "<br>";
echo $books[15];
echo "<br>";
echo $books[16];
echo "<br>";
echo $books[17];
}//END WHILE LOOP
fclose($fp ); //Close file
}
Having to make a few guesses here but i believe the file is going to look like:
title*author*pubdate*isbn
title*author*pubdate*isbn
title*author*pubdate*isb
if this is wrong, let me know
as long as the fie is not to large read it in to an array:
$book_array=file('book_file.txt');
//print_r($book_array); //is it an array of the books, one book per array key
now to separate each line:
foreach($book_array as $line){
$line_sep=explode('*',$line);
// with no sorting option you could just echo inside the loop
//if you want to keep sorting options we have to keep the separated lines
$new_book_array[]=$line_sep;
}
unset($book_array);//free up memory if needed
//print_r($new_book_array);//is it a multi-d array, book then the 4 elements
to sort our new multidimensoanl array:
usort($new_book_array, function($a, $b) {
return strcmp($a['0'], $b['0']);;
}); //this sorts on key 0 in your case title:
//print_r($new_book_array); // has it sorted properly
for display:
loop again
echo '<table><tr><th>Title</th><th>Author</th><th>Pub Date</th><th>ISBN</th></tr>';
foreach($new_book_array as $book){
//print_r($book); //is it each indervidual book array with 4 elements
echo '<tr><td>'.$book[0].'</td><td>'.$book[1].'</td><td>'.$book[2].'</td><td>'.$book[3].'</td></tr>';
}
echo '</table>';

How to search through Json by keyword in PHP?

i am currently having problem with searching through json file, and i am searching and showing faculties based on searched word but it only shows the value when i type in the full name, how can i get search to work if i like only type first few characters and show the results with name starting with it.
here is my code:
<?php
if(isset($_GET['search_word']))
{
$search_word=$_GET['search_word'];
$string = file_get_contents("faculty_info.json");
$jfo = json_decode($string);
// copy the posts array to a php var
$posts = $jfo->faculty_info;
// listing posts
foreach ($posts as $post) {
if($post->name == "$search_word"){
echo $post->name;
echo "<br>";
echo $post->division;
echo "<br>";
echo $post->school;
echo "<br>";
echo $post->designation;
echo "<br>";
echo $post->email;
echo "<br>";
echo $post->room;
echo "<br>";
echo "<br>";
}
}
}
?>
Try this
$post->name = 'How are you?';
$search_word = "How";
$pos = strpos($post->name, $search_word);
if ( $pos !== false && $pos == 0) {
echo 'found';
//do your script
}
You may also want to replace strpos with stripos in case you need to handle case insensitive searches.

Replace Values of an array with key's of another array. PHP Homework

Hi there this is a bit hard to word so I'm trying my best to explain what is happening. Pretty much I have a form where I had a selection box. I had to fill it with the following.
<?
$PROVINCES = array("--" => "---Please Select Provinces---",
"nf"=>"Newfoundland",
"pe"=>"PrinceEdwardIsland",
"nb"=>"New Brunswick",
"ns"=>"Nova Scotia",
"qc"=>"Quebec",
"on"=>"Ontario",
"mb"=>"Manitoba",
"sk"=>"Saskatchewan",
"ab"=>"Alberta",
"bc"=>"British Columbia",
"nt"=>"Northwest Territories");?>
So I did that:
<select name = "province[]" multiple size = "12" <?if ($_SERVER['REQUEST_METHOD'] == 'POST'){if (isset($errorList['province']))
{
echo "class=\"error\"";
}}?>>
<?php foreach($PROVINCES as $key => $value) { ?>
<option value="<?php echo $key ?>"<?= (in_array($key, $_POST['province'] ) )?'selected':'';?>><?php echo $value?></option>
<?php }?>
</select>
Now the next step was to make a table of all the values in $_POST
but the problem is since the values are nf, pe, nb etc it will write those in the table and not PrinceEdwardIsland, New Brunswick, Nova Scotia.
echo '<table border="1" style="width:100%">';
foreach($_POST as $name => $out)
{
echo '<tr>';
echo '<td>';
echo '<strong>';
echo strtoupper($name);
echo '</strong>';
echo '</td>';
echo '<td>';
if (is_array($out))
{
count($_POST);
$arrayOutput = implode(", ", $out);
echo $arrayOutput;
}
else if (strlen($out) <= 0)
{
echo "---None supplied---";
}
else
{
echo $out;
}
echo '</td>';
echo '</tr>';
}
echo '</table>';
But as you can see from here we have multiple different $name from $_POST when we call it in our foreach loop.
And as you can see when I do is_array($out) I implode the array and split it out by ","'s I only need to get the full names for provinces, I had a checkbox for Status and it only has to display what the value in the checkbox was. I'm trying to figure out how I can get the $key of $PROVINCES to replace the imploded values in $_POST['province']
Hopefully I explained it well enough for people to understand.

Check if variable contents exist in array displayed in table?

I am creating an in-house order pulling application. I'm pulling form an ODBC source and placing items in an array. I'm then creating a new flat file for each order being physically worked on. When the user scans/enters an item from that order number it places that item on a new line in the order file that was created.
I'm then reading that order file back to get the items that have been scanned thus far. Where I'm stuck is how to mark that line item that exist in the order file as being completed in the HTML table.
Here is the pertinent code as it relates to my question:
$file_array = file_get_contents($file_ordnumber, "rb");
$items_array = explode("\n",$file_array);
echo "<table>";
for ($i = 0; $i < count($location_array); $i++)
{
echo "<tr>";
if (in_array("$itemno_array[$i]", $items_array)) {
echo "<td>$itemno_array[$i] EXISTS</td>";
}
else {
echo "<td>$itemno_array[$i] NO EXIST</td>";
}
// echo "<td>$location_array[$i]</td>";
echo "<td>$qty_array[$i]";
echo "<td>$pickingseq_array[$i]</td>";
echo "</tr>";
}
echo "</table>";
As you can see I'm iterating through the array and displaying it in a HTML table. I'm curious why my above code isn't working. My result ends up being from the 'else' statement thus ALL lines, even if they exist in the file is showing as "NO EXIST" which is obviously incorrect.
Can you post your Print_r($items_arr);
also try using isset($arrayVar[$key]
and try removing double quotes and see if it works.. like ...
$file_array = file_get_contents($file_ordnumber, "rb");
$items_array = explode("\n",$file_array);
echo "<table>";
for ($i = 0; $i < count($location_array); $i++)
{
echo "<tr>";
if (in_array($itemno_array[$i], $items_array)) {
echo "<td>".$itemno_array[$i]." EXISTS</td>";
}
else {
echo "<td>".$itemno_array[$i]." NO EXIST</td>";
}
// echo "<td>".$location_array[$i]."</td>";
echo "<td>".$qty_array[$i]."";
echo "<td>".$pickingseq_array[$i]."</td>";
echo "</tr>";
}
echo "</table>";
I got this resolved by going about it a different way. I use strpos() to search the flat file itself rather than the array that I exploded from it:
echo "<table>";
//for ($i = 0; $i < count($itemno_array); $i++)
for($i=0;$i<sizeof($itemno_array);$i++)
{
echo "<tr>";
// if (in_array($itemno_array[$i], $items_array)) {
echo "<td>";
$var = $itemno_array[$i];
$newvar = trim($var);
if(strpos($file_array, $newvar ) !==FALSE) {
echo "$var ** EXISTS</td>";
}
else {
echo "$var DOES NOT EXIST **</td>";
}
// echo "<td>$location_array[$i]</td>";
echo "<td>$qty_array[$i]";
echo "<td>$pickingseq_array[$i]</td>";
echo "</tr>";
}
echo "</table>";

What is the quickest way to randomize a data set?

For a multiple choice quiz application i would like to show the dummy answers with the correct answer. But with the correct answer being in a different position at each different question.
This is what i've tried but it doesn't seem to be working:
if ($question->type == 1)
{
echo "<div id='dummy_answers'>";
//Show Dummy
echo '<h3>Dummy Answers</h3>';
//Get Dummy Answers
$query = $this->test_model->getDummyAnswers($question->id);
$dummy_num = 1;
foreach ($query->result() as $row)
{
$rand_number = rand(1, 3);
if ($dummy_num == $rand_number)
{
$dummy_num = $rand_number + 2;
echo '<h4>Answer '.$dummy_num.'</h4>';
echo '<p>';
echo $row->option;
echo '</p>';
//Now echo the real answer
echo '<h4>Answer '.$rand_number.'</h4>';
echo '<p>';
echo $row->option;
echo '</p>'; //Get id's for each.echo $row->id;
}
else
{
echo '<h4>Answer '.$dummy_num.'</h4>';
echo '<p>';
echo $row->option;
echo '</p>';
$dummy_num++;
}
}
echo '</div>';
echo ' <hr/>';
}
?>
You should use shuffle function.
In your case it will be:
if ($question->type == 1)
{
echo "<div id='dummy_answers'>";
//Show Dummy
echo '<h3>Dummy Answers</h3>';
//Get Dummy Answers
$query = $this->test_model->getDummyAnswers($question->id);
$answers=$query->result();
shuffle($answers);
foreach ($answers as $nr=>$row)
{
echo '<h4>Answer '.($nr+1).'</h4>';
echo '<p>';
echo $row->option;
echo '</p>';
}
echo '</div>';
echo ' <hr/>';
}
?>
Put the answers in an array the use shuffle
$random_array = shuffle($answers);
All you need to do is put the keys for your answers in an array and call shuffle(). Something like this:
$keys = array_keys($answers);
shuffle($keys);
for ($key in $keys) {
echo $answers[$key];
}
I would suggest putting all the answers into an array and using the shuffle() function to randomize them. Once they're shuffled, just iterate the array with a loop and build the markup.
You could put the results into an array (1 correct and 3 incorrect), then shuffle, then output them?
$answers = array();
array_push($answers, "answer1");
array_push($answers, "answer2");
array_push($answers, "answer3");
array_push($answers, "answer4");
shuffle($answers);
foreach ($answers as $answer) {
echo $answer;
}

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