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How to use explode function to delimit and display different values

I’m making a random sentence generator for my English class. I’m close but because of my limited php and javascript knowledge I need to ask for help. I’m not bad at reading the code, I just get stuck writing it.
I want to use explode to break up a string of comma seperated values. The string is a mix of English and Spanish, on the .txt file they would seperated like:
The book, El libro
The man, El hombre
The woman, La mujer
etc.
I would like to break these two values into an array and display them in separate places on my web page.
I`m going to use a random text generator script that I found, it’s working great with no problems. I just need to modify it using explode to read, separate the values into an array, and be able to display the separate values of the array.
<?php
/* File, where the random text/quotes are stored one per line */
$settings['text_from_file'] = 'quotes.txt';
/*
How to display the text?
0 = raw mode: print the text as it is, when using RanTex as an include
1 = Javascript mode: when using Javascript to display the quote
*/
$settings['display_type'] = 1;
/* Allow on-the-fly settings override? 0 = NO, 1 = YES */
$settings['allow_otf'] = 1;
// Override type?
if ($settings['allow_otf'] && isset($_GET['type']))
{
$type = intval($_GET['type']);
}
else
{
$type = $settings['display_type'];
}
// Get a list of all text options
if ($settings['text_from_file'])
{
$settings['quotes'] = file($settings['text_from_file']);
}
// If we have any text choose a random one, otherwise show 'No text to choose from'
if (count($settings['quotes']))
{
$txt = $settings['quotes'][array_rand($settings['quotes'])];
}
else
{
$txt = 'No text to choose from';
}
// Output the image according to the selected type
if ($type)
{
// New lines will break Javascript, remove any and replace them with <br />
$txt = nl2br(trim($txt));
$txt = str_replace(array("\n","\r"),'',$txt);
// Set the correct MIME type
header("Content-type: text/javascript");
// Print the Javascript code
echo 'document.write(\''.addslashes($txt).'\')';
}
else
{
echo $txt;
}
?>
The script that displays the result:
<script type="text/javascript" src="rantex.php?type=1"></script>
Can someone please help me modify the rantex.php file so that I can use explode to separate the different comma separated values, and use a different script to call them in different places on my web page?
Thank you, and please excuse my noobness.

The following seems unnecessary, since file() will have already removed new line characters:
// New lines will break Javascript, remove any and replace them with <br />
$txt = nl2br(trim($txt));
$txt = str_replace(array("\n","\r"),'',$txt);
To break your line, you may instead use:
list($english, $spanish) = explode(', ', trim($txt));

It seems you are trying to use PHP to serve a static page with some random sentences, right? So why not use PHP to serve valid JSON, and handle to display logic on the client?
Heres a quick implementation.
// Get the data from the text file
$source = file_get_contents('./quotes.txt', true);
// Build an array (break on every line break)
$sentences = explode("\n", $source);
// Filter out empty values (if there is any)
$filtered = array_filter($sentences, function($item) {
return $item !== "";
});
// Build a hashmap of the array
$pairs = array_map(function($item) {
return ['sentence' => $item];
}, $filtered);
// Encode the hashmap to JSON, and return this to the client.
$json = json_encode($pairs);
Now you can let the client handle the rest, with some basic JavaScript.
// Return a random sentence from your list.
var random = sentences[Math.floor(Math.random() * sentences.length)];
// Finally display it
random.sentence
[edit]
You can get the JSON data to client in many ways, but if you don't want to use something like Ajax, you could simply just dump the contents on your webpage, then use JavaScript to update the random sentence, from the global window object.
// Inside your php page
<p>English: <span id="english"></span></p>
<p>Spanish: <span id="spanish"></span></p>
<script>
var sentences = <?= json_encode($pairs); ?>;
var random = sentences[Math.floor(Math.random() * sentences.length)];
var elspa = document.getElementById('spanish');
var eleng = document.getElementById('english');
elspa.innerText = random.sentence.split(',')[1];
eleng.innerText = random.sentence.split(',')[0];
</script>

Ok, so I have this figured out, I take 0 credit because I paid someone to do it. Special thanks to #stormpat for sending me in the right direction, if not for him I wouldn't have looked at this from a JSON point of view.
The .PHP file is like so:
<?php
$f_contents = file('quotes.txt');
$line = trim($f_contents[rand(0, count($f_contents) - 1)]);
$data = explode(',', $line);
$data['eng'] = $data[0];
$data['esp'] = $data[1];
echo json_encode($data);
?>
On the .HTML page in the header:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script>
(function ($) {
$(function()
{
function load_random_data() {
$.get('random_line.php', function(data) {
var data = $.parseJSON(data);
$('#random_english').text(data.eng);
$('#random_spanish').text(data.esp);
});
}
load_random_data();
$('#get_random').click(function(e){
e.preventDefault();
load_random_data();
});
});
})(jQuery);
</script>
This splits the different variables into classes, so to call them into my html page I call them by their class, for instance I wanted to drop the variable into a table cell so I gave the individual td cell a class:
<td id="random_spanish"></td>
<td id="random_english"></td>
Plus as a bonus the coder threw in a nifty button to refresh the json classes:
<input type="button" value="Get random" id="get_random" />
So now I don`t have to have my students refresh the whole web page, they can just hit the button and refresh the random variables.
Thanks again everyone!

Convert PHP objects array to javascript array

I retrieve image paths with the function get_all();. This get_all function retrieves images as an object. This object has the attributes name, source_path and date. I want my javascript to add images to a div. I have the following:
The instantiate.php includes files like Jquery and another JS file.
<?php
require_once("../../include/instantiate.php");
$photos = Photos::get_all();
$JSPhotos;
foreach($photos as $photo) { $JSPhotos + $photo->source_path; }
?>
<script type="text/javascript">
$(document).ready(function() {
var photos = <?php echo json_encode($JSPhotos); ?>;
for(var i = 0; i <= 10; i++)
{
create_image("../"+photos[i]);
}
});
This does not work. Anyone got a solution?
Solution in Jeroen's Post!
New Problem;
In the create_image function I set the class and src of the image element. When you click such an image I want an alert box to show up. I have checked if the class is set correctly, and I concluded that all images did have the classname "imgid". So, any idea why this dont work?
Script in the javascript part:
$(".imgid").click(function() {
alert("hey");
});

You are not assigning anything to your variable.
You probably want:
$JSPhotos = array();
foreach($photos as $photo) {
$JSPhotos[] = $photo->source_path;
}
Or something similar.

populate dropdown onload by passing php array to javascript function

im trying to pass a php array to javascript function onload that will display the js array in a drop down list but now im already doing it for sometime i guess i need to pop it again
first i pass it from one php file to another using this code
header("location: Rules.php?varFields=".serialize($varFields));
secondly i transfer to another variable as it had been passed to the said php file
<?php
$varArray = unserialize($_GET['varFields']);
?>
third part is im tyring to pass it into a jS functon that will then display it to a drop down list
<body id="body" onclick="cmbRuleField(\'' + <?php echo json_encode($varArray);?> + '\');" >
and here is the external javascript code
function cmbRuleField(varArray)//ruleField
{
var varDisplay = JSON.stringify(varArray);
var sel = document.getElementById("ruleField") // find the drop down
for (var i in varDisplay)
{ // loop through all elements
var opt = document.createElement("option"); // Create the new element
opt.value = varDisplay [i]; // set the value
opt.text = varDisplay [i]; // set the text
sel.appendChild(opt); // add it to the select
}
}
for the first two part i already tested it and it is working but for the last parts i cant make it work

I think this part looks suspicious
<body id="body" onclick="cmbRuleField(\'' + <?php echo json_encode($varArray);?> + '\');" >
maybe
<body id="body" onclick="cmbRuleField(<?php echo json_encode($varArray);?>)">
is more like it.
One more tip, you can see the output on the rendered page to determine what the written out code looks like. So if you see something like:
<body id="body" onclick="cmbRuleField('['a', 'b']')">
you know there is a problem. You want a native Javascript array to be passed like this
<body id="body" onclick="cmbRuleField(['a', 'b'])">
EDIT
After talking on chat it became clear the top portion of OP's code needed a tweak as well.
header("location: Rules.php?varFields=".http_build_query($varFields));

The problem has to do with quotes not being terminated here:
...
<body id="body" onclick="cmbRuleField(\'' + <?php echo json_encode($varArray);?> + '\');" >
...
The JSON created using json_encode will have a lot of double quotes. Try this:
<script>
var array = <?php echo json_encode($varArray);?>;
</script>
<body id="body" onclick="cmbRuleField(array);">

There is a much easier way. Encode the $varArray as direct HTML options before sending to the browser. For instance:
<select id="ruleField">
<?php for ($i = 0; $i < count($varArray); $i++) { ?>
<option value="<?php= $varArray[$i].val ?>"><?php= $varArray[$i].name ?></option>
<?php } ?>
</select>

Might be because you are calling JSON.stringify on something that is already a string?
Also what is myCars?
..
for (var i in myCars)
..
Possibly rename it to varArray.
or rename varDisplay to varArray.
and lastly try calling JSON.parse instead:
function cmbRuleField(varArray)//ruleField
{
var varDisplay = JSON.parse(varArray);
var sel = document.getElementById("ruleField") // find the drop down
for (var i in myCars)
{ // loop through all elements
var opt = document.createElement("option"); // Create the new element
opt.value = varDisplay [i]; // set the value
opt.text = varDisplay [i]; // set the text
sel.appendChild(opt); // add it to the select
}
}
If that didn't work post the html output here so peeps can create a fiddle :)

How to pass javascript array variable through jquery $.window url to codeigniter controller?

I have a list of students with a corresponding check box each. The check box value contains students id that I need to pass to my controller function. I have a javascript code that detects the check box checked values and stored it to a javascript array variable. The javascript array variable will then be passed to the $.window url with a url address heading to my codeigniter controller function. This works fine when you choose the first student, it will show the student id via var_dump method, however, if the second or third and so on student is chosen, it says the uri you submitted has disallowed character. The same response when you checked all check boxes. The javascript array variable seems to passed only a single value to my codeigniter controller function taking just the first value of the student list. How I would be able to pass also the 2nd, 3rd and so on checked values or even to pass javascript array variable to codeigniter controller function through javascipt url with $.window. Images and codes are shown below. Thanks a lot.
Image choosing just the first student list
Controller output image after clicking send email button
Image choosing the second student
Controller output image after clicking send email button
Image choosing all student list
Controller output image after clicking send email button
Javascript:
<script type="text/javascript">
$("#send_email").click(function(){
var cboxes = document.getElementsByName('student_id[]');
var checked_val= [];
var unchecked_val=[];
var len = cboxes.length;
for (var i=0; i<len; i++) {
(cboxes[i].checked) ? checked_val[i]=cboxes[i].value:unchecked_val[i]=cboxes[i].value;
}
$.window({
title: "Coursebooking",
url: "<?php echo base_url() ?>student_controller/pop_val/"+checked_val,
});
});
</script>
Controller:
function pop_val(){
$stud_id = $this->uri->segment(3);
var_dump($stud_id);
}

try this,
var array_val = $('input[name="student_id[]"]:checked').map(function(){
return this.value;
}).get();
$.window({
title: "Coursebooking",
url: "<?php echo base_url() ?>ajax_student_controller/pop_val/" + array_val,
........

localhost/coursebooking/ajax_student_controller/pop_val/338,339 This kind of url causes the uri disallowed character error. A comma between the numbers 338 and 339. To solve this is just to add comma character in config.php file in $config['permitted_uri_chars'] = 'a-z 0-9~%.:_+-'; and then use explode function in your controller function to separate the comma separated values. Here are the output:
Image of a var_dump output after checking 3 check boxes and adding comma character in the config.php file $config['permitted_uri_chars'] = 'a-z 0-9~%.:_+-,';
Image of a var_dump output to separate comma separated values into array indexed values using explode function.
Controller Code:
function pop_val(){
$stud_id = $this->uri->segment(3);
$split_val = explode(',',$stud_id);
var_dump($split_val);
}

My revised javascript code. However, this changes only applies in getting the second value of the student list being checked, the same as getting the right value of the 3rd student list being checked. But checking all check boxes together returns a uri error saying "The URI you submitted has disallowed characters".
<script type="text/javascript">
$("#send_email").click(function(){
var cboxes = document.getElementsByName('student_id[]');
var checked_val= [];
var unchecked_val=[];
var array_val=new Array();
var len = cboxes.length;
for (var i=0; i<len; i++) {
if(cboxes[i].checked){
checked_val[i]=cboxes[i].value;
array_val.push(checked_val[i]);
}
}
$.window({
title: "Coursebooking",
url: "<?php echo base_url() ?>ajax_student_controller/pop_val/" + array_val,
});
});
</script>
Image choosing the second student on the list
Controller output returns the right value
Image choosing the 3rd student on the list
Controller output returns the right value
Image choosing the all student on the list
Still Controller output returns the uri error

url: "<?php echo base_url() ?>student_controller/pop_val/"+checked_val,
Try:
url: "/student_controller/pop_val/" + checked_val,

Drupal 6 javascript in module block for front page

I'm trying to create a simple image slider on the front page of my drupal website. I wrote a module with the basic outline as follows
<?php
function slider_init(){
drupal_add_js(drupal_get_path('module', 'slider') .'/slider.js');
}
function slider_block($op = 'list', $delta = 0, $edit = array()) {
$block = array();
switch ($op) {
case "list":
// Generate listing of blocks from this module, for the admin/block page
$block[0]["info"] = t("slider");
break;
case "view":
// Generate content for blocks from this module
$block_content = "";
$block_content .= "hello";
//Query for the projects
$icons = db_query("SELECT * FROM {alumni_frontpage_projects}");
//Initiation arrays from each table column: title, description, url, icon link
$links = array();
$title = array();
$description = array();
$url = array();
//Generate arrays from each table column: title, description, url, icon link
while($icon_data = db_fetch_array($icons)){
$links[] = $icon_data['slider_image_location'];
$title[] = $icon_data['title'];
$description[]= $icon_data['description'];
$url[] = $icon_data['url'];
}
//Count elements in array and randomly choose one
$res = count($links)-1;
$seed = rand(0,$res);
//Generate HTML and Javascript of Slider
//Check that content isn't empty
if ($block_content == "") {
$block_content = t("Sorry No Content");
}
$block["content"] = $block_content;
break;
case "save":
break;
case "configure":
break;
}
return $block;
}
Now, everything is fine. I generate a block and I can place it wherever I want. Great. But I would really like to use javascript in this block so that I can pass the arrays and use onclick events to slide through some images from the arrays i queried. So I found out that I will have to pass the variables into javascript and I'll have to identify the javascript file i want to use in the module.
//add variable to the Javascript
drupal_add_js(array('slider_settings' => array('variable_name' => $variable_name)), 'setting');
//add Javascript file to module
drupal_add_js(drupal_get_path('module', 'slider') .'/slider.js');<br>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I put these in the hook_init BUT NOTHING HAPPENS!!!!! I tested to see basic alerts. If I put hard code into the _block, such as:
$block_content .= '
<script type="text/javascript">
var x
x = 50;
document.write(x); //prints the value of x
</script>';
Then I see '50' prints.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If I try to pass a variable to the hard coded script. That DOES NOT WORK either.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If I try to write 50 through the previous code, but from a separate file called slider.js which is in the same folder using "drupal_add_js(drupal_get_path('module', 'slider') .'/slider.js');", That DOES NOT WORK either (even though I'm not passing a variable)
So what the heck is going on!! Is it possible I'm missing some important core drupal files? Is there a way to trouble shoot this further?
Thanks!

drupal_add_js should work in hook_init().First Check whether your hook function is correctly named as ModuleName_init() or not.