I am using following
if ($dataprev['imagefile']!='' && getimagesize('http://localhost/branches/standard/uploads/' . $dataprev['imagefile']) !== false) {
$html .= ' <img src="http://localhost/branches/standard/uploads/' . $dataprev['imagefile'] . '" height="100" border="0"/>';
}
To check if image exist. For some reason it doesnt work well. The app tries to load some unexisting images. What is the problem and how to do it better?
Related
While working on my photo gallery I decided it was best to have an alternate file if image that should display doesn't. I've looked on this site, and may others. They all say to use:
$VariableName = "photography/small/2014-09-21-red-1.png";
if (file_exists ($VariableName)) {echo "Yes!!!";}
else {echo "Nooo!!!";}
or
if (file_exists ("photography/small/2014-09-21-red-1.png")) {echo "Yes!!!";}
else {echo "Nooo!!!";}
For some reason, this will not work for me. It does work, but only when file_exists is set to !file_exists, which is saying: "if this file does not exist, display the image that exists (the image I want, not it's replacement)". In other words:
this is saying if apple exists, display "orange"; and if apple does not exist, display apple.
I've even placed the generated image link in the search bar (when using !file_exists), and after pressing enter, it brings me to the image. I've made sure that the images are set to 0777 in case that's interfering, but it seems to have no effect. All of the $DataRows variables are connected to a database and I've triple-checked that the file names in photography/small match those in the database table.
Why is this happening?
$URLPath = "http://localhost/~matthew/";
if (file_exists ($URLPath . "photography/small/" . $DataRows["DatePublished"] . "-" . $DataRows["FileName"] . "." . $DataRows["ImageExtension"])) {
echo '<img src="' . $URLPath . "photography/small/" . $DataRows["DatePublished"] . "-" . $DataRows["FileName"] . "." . $DataRows["ImageExtension"] . '" alt="' . $DataRows["PhotoName"] . '">' . "\n";
}
else {
echo '<img src="' . $URLPath . 'img/no-image.png" alt="Image Not Here">' . "\n";
}
Thank you very much for the help.
What happens if you change $URLPath from
$URLPath = "http://localhost/~matthew/";
to
$URLPath = $_SERVER['DOCUMENT_ROOT'] . "/~matthew/";
It looks like you are checking for a file but passing a URL into the function. It is probably returning false since the URL is not a valid path on your server. I would suggest using the actual path of the file or if you have to use a URL check out this post: How to check if a file exists from a url
Try using clearstatcache() and double check the file names and paths.
if (file_exists ($VariableName or "path-to-image")) {
This is gibberish. As long as "path-to-image" is not null, the operand will evaluate as (bool) true.
It should be:
if (file_exists ($VariableName)) {
It looks like you should be using
If(is_readable($variable)) {
But looking at your later code you are not using the construct you originally quoted.
file_exists() works as described for me in lots of different contexts.
I have got a directory which contains several folders with images. What I want to do is to read all the images using php script and showing them with div in a browser. The code I have tried to implement is the following:
<?php
function listFolderFiles($dir)
{
echo '<ol>';
foreach (new DirectoryIterator($dir) as $folder) {
if (!$folder->isDot()) {
// echo '<li>' . $folder->getFilename() . '<br>';
if ($folder->isDir()) {
$user = $dir . '/' . $folder;
foreach (new DirectoryIterator($user) as $file) {
if ($file != '.' && $file != '..') {
// echo '<li>' . $file->getFilename();
$image = $user . '/' . $file;
echo $image . '<br>';
echo '<div>';
echo '<img src="' . $image . '" width="500" height="500" alt="';
echo '"/>';
echo '</div>';
}
}
}
echo '</li>';
}
}
echo '</ol>';
}
listFolderFiles('images');
The command echo $image.'<br>'; prints the names of all images. With the following command I manage to create div, however without the images been displayed inside them:
echo '<div>';
echo '<img src="' . $image . '" width="500" height="500" alt="';
echo '"/>';
echo '</div>';
Am I doing something wrong? The $image paths are correct.
EDIT: I move the folder of images in the same folder with the php file in the wamp folder. Now for example the image file is the following images/01virarias/1_.jpg. I change the call of my function as listFolderFiles('images');. However I am getting the same empty divs.
You need to use an URL. It seems you are using local files. Your browser is the 'problem'. Although it is a matter of security.
The images should be in your server environment.
And it seems you forgot a <li> start tag.
if your path is correct do a inspect element on your browser i think it's quoting issue try
echo '<img src="'. $image .'" width="500" height="500" alt=""/>';
You can use images path relative/absolute like
relative :- ../images/your_image
absolute :- http://localhost/your_image_path
i have this code to display images, where each user has his own, i'll comment it to save your time
<?php
session_start();
$name=$_SESSION['valid_user']; //saved current username in variable
$loc="./uploads/"; //location of image directory
$path=$loc.$name; //current user's folder to save his images
echo $path."<br>"; //i used this to make sure the path is ok, only for testing
if(is_dir($path)) //if directory exists, show it exists,otherwise show it
{ //doesnt exists
echo "<br>exists";
}
else
{
echo "<br>not exists";
}
$files = glob($path."/");
for ($i=1; $i<count($files); $i++)
{
$num = $files[$i]; //picture number
print $num."<br />";
echo '<img src="'.$path.'" alt="random image" height="100" width="100"/>'."<br /><br />";
} //shows the picture till the last one
?>
the output that i get is this this
./uploads/user_name
exists
but it does not show the images, even though the folder is not empty (upload script works fine).
EDIT; solved it (low rep, cant answer my own question).
got it. For anyone who cares, this line here
echo '<img src="' . $path . '/' . $files[$i] . '" <!-- etc --> />';
wasn't working because i added $files, which already contained the path, and it was giving input to img src as
/uploads/username/uploads/username
so that was two times the same path.Upon removing $path, and using just
<img src="' . $files[$i] . '"
did the trick. Thank you all for your help.
I think you need to pass a wildcard path to glob: glob($path . '/*'). You are also not printing the filename in the image source attribute:
echo '<img src="' . $path . '/' . $files[$i] . '" <!-- etc --> />';
Also, your $num is actually the filename, not the picture number - that is $i. You could really simplify that loop using the foreach construct:
foreach($files as $filename) {
// etc
}
you need to add a pattern for using glob afaik
$files = glob($path."/*.*"); // all files
$files = glob($path."/*.jpg"); // all jpgs etc.pp
foreach($files as $idx => $file)
{
$num = $idx+1; //idx starts with 0 so we add one here
print $num."<br />";
echo '<img src="'.$path.'/'.$file'" alt="random image" height="100" width="100"/>'."<br /><br />";
}
I'm trying to get a thumbnail to link to a PDF of the same name if the PDF exists, but to not link to anything if the PDF doesn't exist. Here's the code I have:
<?php
if ( function_exists('has_post_thumbnail') && has_post_thumbnail() ) {
$full_image_url = wp_get_attachment_image_src( get_post_thumbnail_id(), 'full') ;
$pdf = substr_replace($full_image_url , 'pdf', strrpos($full_image_url[0] , '.') +1);
$filename = $pdf[0];
if (file_exists($filename)) {
echo '<a href="' . $pdf[0] . '" title="' . the_title_attribute('echo=0') . '" . target="_blank" >';
the_post_thumbnail('Full Size');
echo '</a>';
}
else {
echo "The file $filename exists";
}
}
?>
Currently, the else statement is just to prove whether or not it's finding the file. Which it seems to, as it displays The file http://localhost/AWAD/wp-content/uploads/2012/03/+D.pdf exists. And if I get rid of the conditional, the post thumbnail displays with a link to the PDF. I just can't get the conditional to work.
Can anyone spot why it's not working?
You should pass a path on your FS to file_exists, you are passing an URL now
I'm pretty sure file_exists wants a full file path, not a URL. So, you'll probably want to use the WordPress wp_uploads_dir function to get the base path to your uploads directory and then append the rest of the path to the end of that and then pass that string to file_exists. Hopefully that makes sense.
I have some content loaded via ajax that includes the scandir() function. On local and on my server it works perfectly, however on my client's server it didn't work because they run PHP4 (scandir() was implemented in version 5). I called tech support and their solution was to change file extensions from .php to .php5. However, this only partially works if I call directly the page, but when I load it via ajax it does not.
Is there a way to fix this? I didn't know ajax and PHP could be incompatible.
EDIT
Here's part of the code. Is simply an image gallery and I'm using scandir() to get the images:
<div id="#vtabs-content-a">
<ul class="slider">
<?php
$featured_dir = 'img/systems/6020/';
$scan = scandir($featured_dir);
echo '<li id="' . $scan[2] . '"><img src="' . $featured_dir . $scan[2] . '" alt="' . $scan[2] . '" width="700" height="350" /></li>';
?>
</ul>
<ul class="thumb 6020a">
<?php
$dir = 'img/systems/6020/z_thumbs/';
$scan = scandir($dir);
for ($i = 0; $i<count($scan); $i++) {
if ($scan[$i] != '.' && $scan[$i] != '..') {
echo '<li><img src="' . $dir . $scan[$i] . '" alt="' . $scan[$i] . '" width="40" height="40" /></li>';
}
};
?>
</ul>
I actually had forgotten to change to .php5 in the ajax call, already did it but still won't work. Another point is that when I call the page directly the slideshow doesn't work, but at least the pictures are there.
The ajax call is this:
$(".a6020").live("click", function(){
$("#main").load("a6020.php5 #container", function(){
$('#vtabs5').jVertTabs();
$.getScript("js/scandir.js", function(){
});
});
});
You could try adding a .htaccess file to run php5 on extensions that end in .php by adding
AddHandler application/x-httpd-php5 .php
To a .htaccess file.