Currently, I'm messing around with SoundCloud's API and it's returning something that looks like this.
0. HotBox Michael da Vinci Prod Free P.mp3
https://api.soundcloud.com/tracks/373337717/stream?client_id=OURID
1. LSSR Chris P Prod Jake Knight.mp3
https://api.soundcloud.com/tracks/373336760/stream?client_id=OURID
Which is working properly as how the code appears, here it is how I'm printing out the results (very messy but I'm just messing around)
for ($i = 0; isset($house[$i]); $i++) {
$b1 = $house[$i]['title'];
$b2 = $house[$i]['stream_url'];
print '<br>'; print '<br>';
$title = preg_replace('/[^a-zA-Z0-9\s]/', '', strip_tags($b1));
print ''.$i.'. '.$title.'.mp3';
print '<br>';
print $stream = ''.$b2.'?client_id=OURID';
}
Now what I'm wondering is how under every circumstance can we make the 0. return as a 1. and continue counting upwards until reaching the end of the for loop, not removing the 0. data but only changing the number.
I recommend a foreach loop with the $i counter declared in the loop and just increment it as you go.
Untested code:
foreach ($house as $i=>$row){
echo '<br><br>',++$i,'. ',preg_replace ('/[^a-z\d\s]+/i','',strip_tags ($row ['title'])),".mp3<br>{$row ['stream_url']}?client_id=OURID";
}
p.s. I've improved the regex pattern and eliminated all single-use variable declarations. You can break this up over many lines if you prefer.
If you want to avoid the first iteration's double break tags...
foreach ($house as $i=>$row){
if($i) echo '<br><br>'; // if $i is not 0
echo ++$i,'. ';
echo preg_replace ('/[^a-z\d\s]+/i','',strip_tags ($row ['title']));
echo ".mp3<br>{$row ['stream_url']}?client_id=OURID";
}
Based on the comments and your description of what you are trying to do, it sounds like you just need to add another iteration variable:
# Add another variable
$a = 1;
for ($i = 0; isset($house[$i]); $i++) {
$b1 = $house[$i]['title'];
$b2 = $house[$i]['stream_url'];
$title = preg_replace('/[^a-zA-Z0-9\s]/', '', strip_tags($b1));
echo '<br><br>';
# Here you have the $a show up starting at 1
echo ''.$a.'. '.$title.'.mp3<br>';
echo $stream = ''.$b2.'?client_id=OURID';
# Auto increment here
$a++;
}
Related
I have 2 strings like this
$s1="32.56.86.90.23";
$s2="11.25.32.90.10";
I need to compare $s1 and $s2 and find if there are 2 or more numbers in common.
I am using this way
$s1_ar=explode(".",$s1);
$s2_ar=explode(".",$s2);
$result=array_diff($s1_ar,$s2_ar);
$rt1=5-count($result);
if($result>=2){ echo "YES"; } else {echo "no"; }
Since I need millions values of $s1 and $s2 and the code above seems to be slow, do you know alternative way to execute the work faster ?
I tested it with the following code, one million times, less than 2 seconds on my 3 years old laptop.
Loop 1M times takes no time, most time is used for displaying.
Comment off the display, 1M loops, 0.816432 seconds
Saved the results into a file, ~13.564MB, 0.731708 seconds
ob_start();
$t1 = microtime();
for($i=1; $i<=1000000; $i++) {
$s1="32.56.86.90.23";
$s2="10.25.30.90.10";
$s1_ar=explode(".",$s1);
$s2_ar=explode(".",$s2);
$result=array_diff($s1_ar,$s2_ar);
$rt1=5-count($result);
if($result>=2){ echo $i . " YES<br>"; } else {echo $i . " no<br>"; }
}
$out = ob_get_contents();
ob_end_clean();
var_dump($out);
echo '<p>'.(microtime() - $t1).'</p>';
Try this.
$s1="32.56.86.90.23";
$s2="11.23.32.90.10";
$s1_ar=explode(".",$s1);
$s2_ar=explode(".",$s2);
//assuming $s1_ar and $s2_ar both has unique values if not please make them unique
$result_array = array();
$hasMatch = 0;
for($i = 0; $i < count($s1_ar) && $i < count($s2_ar); $i++){
if(!isset($result_array[$s1_ar[$i]])){
$result_array[$s1_ar[$i]] = 1;
}else{
$result_array[$s1_ar[$i]]++;
}
if(!isset($result_array[$s2_ar[$i]])){
$result_array[$s2_ar[$i]] = 1;
}else{
$result_array[$s2_ar[$i]]++;
}
}
foreach($result_array as $result){
if($result >=2) $hasMatch++;
}
if($hasMatch >= 2)
echo "YES";
else
echo "NO";
I think it will solve your purpose.
Looking at: php array_intersect() efficiency
There's mention that array_intersect_key may be more efficient. But really it would be nice to have data and versions to compare results.
$s1 = "2.3.5.7.9.11.13.17";
$s2 = "2.3.4.5.6";
$s1 = array_flip(explode('.', $s1));
$s2 = array_flip(explode('.', $s2));
echo count(array_intersect_key($s1, $s2))>=2 ? 'yes' : 'no';
Output:
yes
I thought of a way to solve this in a 2*n complexity:
We loop one list and create an associative array from it's elements (LIST c) then we loop the second list and look up if the list c contains such an index/key ( c[element] ).
This shall be very light weighted :
$commons = 0;
$s1_fliped = array_flip($s1_ar)
foreach($s2_ar as $s2_el){
if ( isset($s1_fliped[$s2_el]) ){
$commons ++;
}
if($commons >=2) break;
});
I'm currently having trouble printing some simple test statements within my for loop.
<?php
include('../connstr.inc');
$email=$_REQUEST["email"];
$datafile=$_REQUEST["datafile"];
$email_safe=preg_replace("/[^a-zA-Z]/","_",$email);
$path="../uploaded_data";
$xml = simplexml_load_file("{$path}/{$email_safe}/{$datafile}.xml");
// Retreive data details for specified activity
$lapcount = $xml->Activities->Activity->Lap->count();
echo "LapCount: " . $lapcount;
$totalTime = array(); $distance = array(); $maxSpeed = array();
$calories = array(); $intensity = array(); $trigMethod = array();
echo 'Test1';
// Collect details for each lap
for($x = 0; $x < $lapCount; $x++) {
echo 'Test2';
// Find how many trackpoints exist for specified lap
$trackPointCount = $xml->Activities->Activity->Lap[$x]->Track->Trackpoint->count();
echo 'Test3';
echo "<br /> Lap {$x} TrackP Count: " . $trackPointCount;
echo 'Test4';
}
When I run it, only 'Test1' and the 'lapCount' gets printed. Anything within the for loop doesn't run. No errors are being returned either. $x will definitely be less then $lapCount as this is just 3. I fail to see the (most likely) stupid mistake I've made even after looking over it many times.
The problem with your code is this:
You declare lapcount as $lapcount, but try using it as $lapCount
(Notice the capitalization of the "C")
Ensure all uses of this variable are typed out exactly the same and everything will work
EDIT:
Seems like you discovered this as I posted my answer
Initially you are using variable name $lapcount but in the last for loop you are using $lapCount that is the reason why you are not getting any value. Use $lapcount in the last for loop also.
for($x = 0; $x < $lapcount; $x++) { // use $lapcount
echo 'Test2';
$trackPointCount = $xml->Activities->Activity->Lap[$x]->Track->Trackpoint->count();
echo 'Test3';
echo "<br /> Lap {$x} TrackP Count: " . $trackPointCount;
echo 'Test4';
}
Here, the name of your var is $lapcount without 'C' lowercase:
// Retreive data details for specified activity
$lapcount = $xml->Activities->Activity->Lap->count();
echo "LapCount: " . $lapcount;
but here, you use 'C' uppercase, $lapCount:
for($x = 0; $x < $lapCount; $x++) {
Newb question: I'm using a foreach loop to get items from an array.
I need to start looping at an offset number- (I'm using a $i variable to do this, no problem).
But when my foreach reaches the end of the array I want it to start going through the array again until it reaches the offset number.
I need to do this so I can have a user open any image in an artist's portfolio and have this image used as the first image presented in a grid of thumbnail icons , with all the other images subsequently populating the rest of the grid.
Any ideas?
Please bear in mind I'm new to PHP! :)
See below for an example of my current code...
$i=0;
$limit=50;// install this in the if conditional with the offset in it (below) to limit the number of thumbnails added to the page.
$offset=$any_arbitrary_link_dependant_integer;
foreach($portfolio_image_array as $k=>$image_obj){//$k = an integer counter, $image_obj = one of the many stored imageObject arrays.
$i++;
if ($i > $offset && $i < $limit) {// ignore all portfolio_array items below the offset number.
if ($img_obj->boolean_test_thing===true) {// OK as a way to test equivalency?
// do something
} else if ($img_obj->boolean_test_thing===false) { // Now add all the non-see_more small thumbnails:
// do something else
} else {
// error handler will go here.
}
} // end of offset conditional
}// end of add boolean_test_thing thumbnails foreach loop.
};// end of add thumbnails loop.
$i = 0;
$limit = 50;
$offset = $any_arbitrary_link_dependant_integer;
$count = count($portfolio_image_array);
foreach($portfolio_image_array as $k=>$image_obj){//$k = an integer counter, $image_obj = one of the many stored imageObject arrays.
$i++;
if ($i > $offset && $i < $limit && $i < ($count - $offset)) {// ignore all portfolio_array items below the offset number.
if ($img_obj->boolean_test_thing===true) {// OK as a way to test equivalency?
// do something
} else if ($img_obj->boolean_test_thing===false) { // Now add all the non-see_more small thumbnails:
// do something else
} else {
// error handler will go here.
}
} // end of offset conditional
}// end of add boolean_test_thing thumbnails foreach loop.
};
Only thing I added was a $count variable.
Edit: If your array starts at 0 I would suggest you put the $i++; at the end of your foreach loop.
A simple method is to use two separate numeric for loops, the first going from offset to end, and the second going from beginning to offset.
<?php
// Create an example array - ignore this line
$example = array(1,2,3,4,5,6);
$offset = 3;
// Standard loop stuff
$count = count($example);
for($i = $offset; $i < $count; $i++)
{
echo $example[$i]."<br />";
}
for($i = 0; $i < $offset; $i++)
{
echo $example[$i]."<br />";
}
?>
This is also almost certainly cheaper than doing multiple checks on every single element in the array, and it expresses exactly what you are trying to do to other programmers who look at this code - including yourself in 2 weeks time.
Edit: depending on the nature of the array, in order to use numeric keys you may first need to do $example = array_values($portfolio_image_array);.
Using Answer Question to force StackOverflow to let me post a decent length of text!
OK #Mark Walet et al, not sure how to post correctly on this forum yet but here goes. I got the issue sorted as follows:
$i=0;
$offset=$image_to_display_number;
$array_length = count($portfolio_image_array);
// FIRST HALF LOOP:
foreach($portfolio_image_array as $k=>$img_obj){// go through array from offset (chosen image) to end.
if ($i >= $offset && $i <= $array_length) {
echo write_thumbnails_fun($type_of_thumbnail, $image_path, $k, $i, $portfolio_image_array, $title, $image_original);
$t_total++;// update thumbnail total count.
}
$i++;
}// end of foreach loop 1.
$looped=true;// Just FYI.
$i=0;// Reset.
// SECOND HALF LOOP:
foreach($portfolio_image_array as $k=>$img_obj){// go through array from beginning to offset.
if ($i < $offset) {
echo write_thumbnails_fun($type_of_thumbnail, $image_path, $k, $i, $portfolio_image_array, $title, $image_original);
}
$i++;
}// end of foreach loop 2.
Thankyou so much for all the help!
:)
as #arkascha suggested use modulo operator
<?php
$example = array(1,2,3,4,5,6);
$count = count($example);
$offset = 3;
for($i = 0; $i < $count; $i++) {
$idx = ($offset + $i) % count
echo $example[$idx]."<br />";
}
?>
I am just a beginner in PHP. I am trying to write program to print numbers like following.
1 1
12 21
123 321
1234 4321
1234554321
I have written the following code.
<?php
$n=5;
for($i=1; $i<=$n; $i++)
{
echo "<br />";
for($j=1; $j<=$i; $j++)
{
echo $j;
}
}
?>
The result displays the following.
1
12
123
1234
12345
I could not reverse it like
1
21
321
4321
54321
How can I do this?
The simplest, hard coded version:
<?php
$text = "1 1
12 21
123 321
1234 4321
1234554321";
echo $text;
?>
Edit
A more generic solution:
<?php
$n = 5;
$seq1 = '';
$seq2 = '';
$format1 = sprintf("%%-%su", $n); //right justified with spaces
$format2 = sprintf("%%%su", $n); //left justified with spaces
for($i=1; $i<=$n;$i++){
$seq1 .= $i;
$seq2 = strrev($seq1);
echo sprintf("$format1$format2\n", $seq1, $seq2);
};
?>
Okay. What you wrote is pretty good. There need to be several changes in order to do what you wanted though. The first problem is that you are rendering it to HTML - and HTML does not render spaces (which we'll need). Two solutions: you use for space, and make sure you use a proportional font, or you wrap everything into a <pre> tag to achieve pretty much the same thing. So, echo "<pre>"; at the start, echo "</pre>"; at the end.
Next - don't have the inner loop go to $i. Let it go to 5 every time, and print a number if $j <= $i, and a space otherwise.
Then, right next to this loop, do another one, but in reverse (starting with 5 and ending with 1), but doing the very same thing.
Viola is a musical instrument.
Here is my solution to your problem.
It isn't the best solution because it doesn't take into account that you could be using numbers higher than 9, in which case it will push the numbers out of line with each other.
But the point is that it is still the start of a solution that you could work on if needed.
You can use an array to store the numbers you want to print.
Because the numbers are in an array it means we can just use a foreach loop to make sure all of the numbers get printed.
You can use PHP's str_repeat() function to figure out how many spaces you need to put in between each string of numbers.
The below solution will only work if you use an array with the default number indicies as opposed to an associative array.
This is because it uses the $key variable in part of the calculation for the str_repeat() function.
If you would rather not use the $key variable then you should be able to figure out how to change that.
When it come to reversing the numbers they have already been stored in a string so you can just use PHP's strrev() function to take care of that and store them in another variable.
Finally you just have to print a line to the document with a line break at the end.
Note that the str_repeat() function is repeating the HTML entity.
This is because the browser will just compress normal white space down to 1 character.
Also note that I have included a style block to change the font to monospace.
This is to ensure that the numbers all line up with each other.
<style>
html, body {
font: 1em monospace;
}
</style>
<?php
$numbers = array(1, 2, 3, 4, 5);
$numbers_length = count($numbers);
$print_numbers = '';
$print_numbers_rev = '';
foreach($numbers as $key => $value) {
$spaces = str_repeat(' ', ($numbers_length - ($key + 1)) * 2);
$print_numbers .= $value;
$print_numbers_rev = strrev($print_numbers);
echo $print_numbers . $spaces . $print_numbers_rev . '<br />';
}
Edit:
Solution without array:
<style>
html, body {
font: 1em monospace;
}
</style>
<?php
$numbers = 9;
$numbers_length = $numbers + 1;
$print_numbers = '';
$print_numbers_rev = '';
for($i = 0; $i <= $numbers; ++$i) {
$spaces = str_repeat(' ', ($numbers_length - ($i + 1)) * 2);
$print_numbers .= $i;
$print_numbers_rev = strrev($print_numbers);
echo $print_numbers . $spaces . $print_numbers_rev . '<br />';
}
$n = 5;
for ($i = 1; $i <= $n; $i++) {
$counter .= $i;
$spaces = str_repeat(" ", ($n-$i)*2);
echo $counter . $spaces . strrev($counter) . "<br/>";
}
<div style="position:relative;width:100px;height:auto;text-align:right;float:left;">
<?php
$n=5;
for($i=1; $i<=$n; $i++)
{
echo "<br />";
for($j=1; $j<=$i; $j++)
{
echo $j;
}
}
?>
</div>
I've tried to do a number(decimal) increment which looks like 001 002 003...123,124 in a loop and couldn't find a simple solution.What I've thought now is to check out whether the number is long enough ,if not prefix it some "0".But it seems not good.Any better ideas?
Thanks.
$x = 6
$y = sprintf("%03d",$x);
http://php.net/manual/en/function.sprintf.php
for($i=1;$i<1000;$i++){
$number = sprintf("%03d",$i);
echo "$number <br />";
}
Two options come immediately to mind. First, try str_pad(). It does exactly what you seem to describe.
Second, you could use sprintf() as another has suggested.
If you are not sure how long the various numbers will turn out to be (e.g., they are determined dynamically and no way of knowing what they will be until afterwards), you can use the following code:
<?php
$numbers = array();
for ($i = 0; $i < 2000; $i++)
{
$numbers[] = $i;
}
array_walk($numbers, function(&$item, $key, $len) { $item = sprintf('%0'.$len.'d', $item); }, strlen(max($numbers)));
print_r($numbers);
?>