如何从PHP数组中的每个字符串中删除文件扩展名？

I have an array of strings, each string containing the name of an image file:

$slike=(1.jpg,253455.jpg,32.jpg,477.jpg);

I want new array, to look like this:

$slike=(1,253455,32,477);

How can I remove the file extension from each string in this array?

If you're working with filenames, use PHP's built in pathinfo() function. there's no need to use regex for this.

<?php

# your array
$slike = array('1.jpg','253455.jpg','32.jpg','477.jpg');

# if you have PHP >= 5.3, I'd use this
$slike = array_map(function($e){
    return pathinfo($e, PATHINFO_FILENAME);
}, $slike);

# if you have PHP <= 5.2, use this
$slike = array_map('pathinfo', $slike, array_fill(
    0, count($slike), PATHINFO_FILENAME
));

# dump
print_r($slike);    

Output

Array
(
    [0] => 1
    [1] => 253455
    [2] => 32
    [3] => 477
)

Regular expressions are your friend on this one. I'm assuming that by brackers, you mean an array.

$k = count($slike);
for ($i = 0; $i < $k; $i++) {
   $extpos = strrpos($slike[$i],".");
   $slike[$i] = substr($slike[$i],0,$extpos);
}

This is no longer regex-dependent, and benchmarks faster than pathinfo().

Using preg_split in foreach

foreach ($slike as &$value) {
    $split = preg_split('/\./', $value);
    $value = $split[0]
}

Change the regex to /[^.]+/ to include a.b.jpg as well.

Try this one:

$slike = array('1.jpg','253455.jpg','32.jpg','477.jpg');

$slike = array_map(function($e){
            $e = explode('.', $e);
            return $e[0];
        }, $slike);

echo "<pre>";
print_r($slike);
echo "</pre>";