Question

I have a sample

$image_src = array(
'image1.jpg',  //Yes
'image2.jpg',  //This image is 404
'image3.jpg'   //Yes
);
for($i=0; $i<count($image_src); $i++) {
   if(!file_exists($image_src[$i])) {
      $image_src[$i] = 'image_change.jpg';
   }
}
print_r($image_src);

But when run result show all image_change.jpg

[0] => 'image_change.jpg',
[1] => 'image_change.jpg',
[2] => 'image_change.jpg'

Result exactly is:

[0] => 'image1.jpg',
[1] => 'image_change.jpg',
[2] => 'image3.jpg'

=>How to fix it

Answer 1

The file name must be the complete path of the file, make sure you set the base directory of the files before calling.

for($i=0; $i<count($image_src); $i++) {
   if(!file_exists($imageBaseDir . '/'. $image_src[$i])) {
      $image_src[$i] = 'image_change.jpg';
   }
}