Php check if the image file name is .jpg, .jpeg, .png or .gif.
I tried to save the web image to local, I am using the code here to make the judge, if the image file name is not specified .jpg, .jpeg, .png or .gif add them. I use stripos
, but I meet some problems when the image looks like this. So how do you decide? Thank you.
$webimage = 'http://pcdn.500px.net/5953805/d0dd841969187f47e8ad9157713949b4b95b3bda/4.jpg?1333782904356';
$pieces = explode("/", $webimage);
$pathend = end($pieces);
$imageinfo = @getimagesize($webimage);
$imagetype= $imageinfo['mime'];
if($imagetype=='image/jpeg'){
if(stripos($pathend,'.jpg')==0){
$newpathend = $pathend.'.jpg'; // if image end is't '.jpg', add '.jpg'
}else if(stripos($pathend,'.jpeg')==0){
$newpathend = $pathend.'.jpeg'; // if image end is't '.jpg', add '.jpeg'
}else{
$newpathend = $pathend;// if image end is '.jpg' or '.jpeg', do not change
}
}
if($imagetype=='image/png'){
if(stripos($pathend,'.png')==0){
$newpathend = $pathend.'.png'; // if image end is't '.png', add '.png'
}else{
$newpathend = $pathend;// if image end is '.png', do not change
}
}
if($imagetype=='image/gif'){
if(stripos($pathend,'.gif')==0){
$newpathend = $pathend.'.gif'; // if image end is't '.gif', add '.gif'
}else{
$newpathend = $pathend;// if image end is '.gif', do not change
}
}
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6 answers
You can try like this
$type=Array(1 => 'jpg', 2 => 'jpeg', 3 => 'png', 4 => 'gif'); //store all the image extension types in array
$imgname = ""; //get image name here
$ext = explode(".",$imgname); //explode and find value after dot
if(!(in_array($ext[1],$type))) //check image extension not in the array $type
{
//your code here
}
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This works for both jpg and jpeg and capital letters. It also works with filenames liketesting.the.bicycle.jpg
Try https://regex101.com/r/gI8uS1/1
public function is_file_image($filename)
{
$regex = '/\.(jpe?g|bmp|png|JPE?G|BMP|PNG)(?:[\?\#].*)?$/';
return preg_match($regex, $filename);
}
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