I have a following string and I want to extract image123.jpg.
..here_can_be_any_length "and_here_any_length/image123.jpg" and_here_also_any_length
image123 can be any length (newimage123456 etc) and with extension of jpg, jpeg, gif or png.
I assume I need to use preg_match, but I am not really sure and like to know how to code it or if there are any other ways or function I can use.
You can use:
if(preg_match('#".*?\/(.*?)"#',$str,$matches)) {
$filename = $matches[1];
}
Alternatively you can extract the entire path between the double quotes using preg_match and then extract the filename from the path using the function basename:
if(preg_match('#"(.*?)"#',$str,$matches)) {
$path = $matches[1]; // extract the entire path.
$filename = basename ($path); // extract file name from path.
}
What about something like this :
$str = '..here_can_be_any_length "and_here_any_length/image123.jpg" and_here_also_any_length';
$m = array();
if (preg_match('#".*?/([^\.]+\.(jpg|jpeg|gif|png))"#', $str, $m)) {
var_dump($m[1]);
}
Which, here, will give you :
string(12) "image123.jpg"
I suppose the pattern could be a bit simpler -- you could not check the extension, for instance, and accept any kind of file ; but not sure it would suit your needs.
Basically, here, the pattern :
starts with a "
takes any number of characters until a / : .*?/
then takes any number of characters that are not a . : [^\.]+
then checks for a dot : \.
then comes the extension -- one of those you decided to allow : (jpg|jpeg|gif|png)
and, finally, the end of pattern, another "
And the whole portion of the pattern that corresponds to the filename is surrounded by (), so it's captured -- returned in $m
$string = '..here_can_be_any_length "and_here_any_length/image123.jpg" and_here_also_any_length';
$data = explode('"',$string);
$basename = basename($data[1]);
Related
I have a path "../uploads/e2c_name_icon/" and I need to extract e2c_name_icon from the path.
What I tried is using str_replace function
$msg = str_replace("../uploads/","","../uploads/e2c_name_icon/");
This result in an output "e2c_name_icon/"
$msg=str_replace("/","","e2c_name_icon/")
There is a better way to do this. I am searching alternative method to use regex expression.
Try this. Outputs: e2c_name_icon
<?php
$path = "../uploads/e2c_name_icon/";
// Outputs: 'e2c_name_icon'
echo explode('/', $path)[2];
However, this is technically the third component of the path, the ../ being the first. If you always need to get the third index, then this should work. Otherwise, you'll need to resolve the relative path first.
Use basename function provided by PHP.
$var = "../uploads/e2c_name_icon/";
echo basename( $var ); // prints e2c_name_icon
If you are strictly want to get the last part of the url after '../uploads'
Then you could use this :
$url = '../uploads/e2c_name_icon/';
$regex = '/\.\.\/uploads\/(\w+)/';
preg_match($regex, $url, $m)
print_r ($m); // $m[1] would output your url if possible
You can trim after the str_replace.
echo $msg = trim(str_replace("../uploads/","","../uploads/e2c_name_icon/"), "/");
I don't think you need to use regex for this. Simple string functions are usually faster
You could also use strrpos to find the second last /, then trim off both /.
$path = "../uploads/e2c_name_icon/";
echo $msg = trim(substr($path, strrpos($path, "/",-2)),"/");
I added -2 in strrpos to skip the last /. That means it returns the positon of the / after uploads.
So substr will return /e2c_name_icon/ and trim will remove both /.
You'd be much better off using the native PHP path functions vs trying to parse it yourself.
For example:
$path = "../uploads/e2c_name_icon/";
$msg = basename(dirname(realpath($path))); // e2c_name_icon
I'm using mb_strtolower to make a string lowercase, but sometimes text contains urls with upper case. And when I use mb_strtolower, of course the urls changing and not working.
How can I convert string to lower without changin urls?
Since you have not posted your string, this can be only generally answered.
Whenever you use a function on a string to make it lower-case, the whole string will be made lower-case. String functions are aware of strings only, they are not aware of the contents written within these strings specifically.
In your scenario you do not want to lowercase the whole string I assume. You want to lowercase only parts of that string, other parts, the URLs, should not be changed in their case.
To do so, you must first parse your string into these two different parts, let's call them text and URLs. Then you need to apply the lowercase function only on the parts of type text. After that you need to combine all parts together again in their original order.
If the content of the string is semantically simple, you can split the string at spaces. Then you can check each part, if it begins with http:// or https:// (is_url()?) and if not, perform the lowercase operation:
$text = 'your content http://link.me/now! might differ';
$fragments = explode(' ', $text);
foreach($fragments as &$fragment) {
if (is_not_url($fragment))
$fragment = strtolower($fragment) // or mb_strtolower
;
}
unset($fragment); // remove reference
$lowercase = implode(' ', $fragments);
To have this code to work, you need to define the is_not_url() function. Additionally, the original text must contain contents that allows to work on rudimentary parsing it based on the space separator.
Hopefully this example help you getting along with coding and understanding your problem.
Here you go, iterative, but as fine as possible.
function strtolower_sensitive ( $input ) {
$regexp = "#((http|https|ftp)://(\S*?\.\S*?))(\s|\;|\)|\]|\[|\{|\}|,|\"|'|:|\<|$|\.\s)#ie";
if(preg_match_all($regexp, $input, $matches, PREG_SET_ORDER)) {
for( $i=0, $hist=array(); $i<=count($matches); ++$i ) {
str_replace( $u=$matches[$i][0], $n="sxxx".$i+1, $input ); $hist[]=array($u,$n);
}
$input = strtolower($input);
foreach ( $hist as $h ) {
str_replace ( $h[1], $h[0], $input );
}
}
return $input;
}
$input is your string, $output will be your answer. =)
I have a string with a path like so:
C:/myfolder/mysubfolder/myfile.doc
I need to truncate the string to become:
myfile.doc
Needless to say, I have a list of such paths with different lengths and different folder depths. What I need is something like trancating the rest of the string beginning from the last of the string till the first / is encountered.
How can I achieve this in PHP.
Many thanks
$path = 'C:/myfolder/mysubfolder/myfile.doc':
$filename = basename($path);
echo $filename; // "myfile.doc"
See Manual "basename()". For more detailed information about a path see pathinfo()
You can use the basename() function for this.
echo basename("C:/myfolder/mysubfolder/myfile.doc");
Output:
myfile.doc
Note that this doesn't exactly do what you described, because for these inputs:
/etc/
.
it would return
etc
.
So an (untested) alternative could be:
$fullname = "C:/myfolder/mysubfolder/myfile.doc";
$parts = explode("/", $fullname);
$filename = $parts[count($parts)-1];
echo $filename;
If you mean you want the filename segment, you can use basename()
http://php.net/manual/en/function.basename.php
Hacking up what I thought was the second simplest type of regex (extract a matching string from some strings, and use it) in php, but regex grouping seems to be tripping me up.
Objective
take a ls of files, output the commands to format/copy the files to have the correct naming format.
Resize copies of the files to create thumbnails. (not even dealing with that step yet)
Failure
My code fails at the regex step, because although I just want to filter out everything except a single regex group, when I get the results, it's always returning the group that I want -and- the group before it, even though I in no way requested the first backtrace group.
Here is a fully functioning, runnable version of the code on the online ide:
http://ideone.com/2RiqN
And here is the code (with a cut down initial dataset, although I don't expect that to matter at all):
<?php
// Long list of image names.
$file_data = <<<HEREDOC
07184_A.jpg
Adrian-Chelsea-C08752_A.jpg
Air-Adams-Cap-Toe-Oxford-C09167_A.jpg
Air-Adams-Split-Toe-Oxford-C09161_A.jpg
Air-Adams-Venetian-C09165_A.jpg
Air-Aiden-Casual-Camp-Moc-C09347_A.jpg
C05820_A.jpg
C06588_A.jpg
Air-Aiden-Classic-Bit-C09007_A.jpg
Work-Moc-Toe-Boot-C09095_A.jpg
HEREDOC;
if($file_data){
$files = preg_split("/[\s,]+/", $file_data);
// Split up the files based on the newlines.
}
$rename_candidates = array();
$i = 0;
foreach($files as $file){
$string = $file;
$pattern = '#(\w)(\d+)_A\.jpg$#i';
// Use the second regex group for the results.
$replacement = '$2';
// This should return only group 2 (any number of digits), but instead group 1 is somehow always in there.
$new_file_part = preg_replace($pattern, $replacement, $string);
// Example good end result: <img src="images/ch/ch-07184fs.jpg" width="350" border="0">
// Save the rename results for further processing later.
$rename_candidates[$i]=array('file'=>$file, 'new_file'=>$new_file_part);
// Rename the images into a standard format.
echo "cp ".$file." ./ch/ch-".$new_file_part."fs.jpg;";
// Echo out some commands for later.
echo "<br>";
$i++;
if($i>10){break;} // Just deal with the first 10 for now.
}
?>
Intended result for the regex: 788750
Intended result for the code output (multiple lines of): cp air-something-something-C485850_A.jpg ./ch/ch-485850.jpg;
What's wrong with my regex? Suggestions for simpler matching code would be appreciated as well.
Just a guess:
$pattern = '#^.*?(\w)(\d+)_A\.jpg$#i';
This includes the whole filename in the match. Otherwise preg_replace() will really only substitute the end of each string - it only applies the $replacement expression on the part that was actually matched.
Scan Dir and Expode
You know what? A simpler way to do it in php is to use scandir and explode combo
$dir = scandir('/path/to/directory');
foreach($dir as $file)
{
$ext = pathinfo($file,PATHINFO_EXTENSION);
if($ext!='jpg') continue;
$a = explode('-',$file); //grab the end of the string after the -
$newfilename = end($a); //if there is no dash just take the whole string
$newlocation = './ch/ch-'.str_replace(array('C','_A'),'', basename($newfilename,'.jpg')).'fs.jpg';
echo "#copy($file, $newlocation)\n";
}
#and you are done :)
explode: basically a filename like blah-2.jpg is turned into a an array('blah','2.jpg); and then taking the end() of that gets the last element. It's the same almost as array_pop();
Working Example
Here's my ideaone code http://ideone.com/gLSxA
I have a script to upload files with PHP.
I already do some cleaning to remove ugly characters.
I would also like to to remove dots in the filename, EXCEPT for the last one, which indicates the file extension.
Anyone has an idea how I could do that.?
For example, how would you get
$filename = "water.fall_blue.sky.jpg";
$filename2 = "water.fall_blue.sky.jpeg";
to return this in both cases..?
water.fall_blue.sky
Use pathinfo() to extract the file name (the "filename" array element is available since PHP 5.2); str_replace() all the dots out of it; and re-glue the file extension.
Here's an example of how this can be done:
<?php
$string = "really.long.file.name.txt";
$lastDot = strrpos($string, ".");
$string = str_replace(".", "", substr($string, 0, $lastDot)) . substr($string, $lastDot);
?>
It converts filenames like so:
really.long.file.name.txt -> reallylongfilename.txt
Check here: example
[Edit] Updated script, dot position is cached now
FILENAME = this/is(your,file.name.JPG
$basename=basename($_FILES['Filedata']['name']);
$filename=pathinfo($basename,PATHINFO_FILENAME);
$ext=pathinfo($basename,PATHINFO_EXTENSION);
//replace all these characters with an hyphen
$repar=array(".",","," ",";","'","\\","\"","/","(",")","?");
$repairedfilename=str_replace($repar,"-",$filename);
$cleanfilename=$repairedfilename.".".strtolower($ext);
RESULT = this-is-your-file-name.jpg