Question

我正在使用scandir()在包含R12345.jpg, R12345_2.jpg, R12346.jpg, R12346_2.jpg, R12346_3.jpg等文件的目录中构建图像文件名数组。

我想知道将此数组拆分为以下元素的最佳方法：

R12345,,jpg
R12345,2,jpg
R12346,,jpg
R12346,2,jpg
R12346,3,jpg

感谢。

Answer 1

~~您可以尝试：~~

$input = 'R12345_2.jpg'; $output = explode(',', str_replace(array('.', '_'), ',', $input);

它会返回一个数组：

array (size=3) 0 => string 'R12345' (length=6) 1 => string '2' (length=1) 2 => string 'jpg' (length=3)

<击>

或使用正则表达式：

preg_match('/^([^_]*)_?(\d+)?\.(.*)$/', $input, $output);

输出：

array (size=4) 0 => string 'R12345.jpg' (length=10) 1 => string 'R12345' (length=6) 2 => string '' (length=0) 3 => string 'jpg' (length=3)

使用

array_shift($output);

您可以快速删除第一个元素。

Answer 2


$files_arr  //this contains your files
$final_arr=array();  //this contains final array

foreach($files_arr as $k=>$v)
{
    $test_arr = explode('.',$v);
    $t = explode('_',$test_arr[0]);
    if(empty($t[1]))    $t[1] = '';
    $t[2] = $test_arr[1];

    array_push($final_arr[$k],$t);
}
print_r($final_arr);

Answer 3

使用explode()函数拆分初始数组，然后使用preg_match拆分单个部分：

$str = 'R12345.jpg, R12345_2.jpg, R12346.jpg, R12346_2.jpg, R12346_3.jpg';
$files = explode(',', $str);

$result = array();
foreach ($files as $file) {
    $matches = array();

    preg_match('/^([A-Za-z0-9]+)_?([0-9]*)\.(jpg|png|gif)/$', trim($file), $matches);

    array_shift($matches); // Remove first match that is the whole file name

    array_push($result, $matches);
}

Answer 4

<?php
//Result of $files = implode(', ',$scandirResult);
$files = 'R12345.jpg, R12345_2.jpg, R12346.jpg, R12346_2.jpg, R12346_3.jpg';
preg_match_all('#((R\d+)_?(\d*))\.(\w+)#',$files,$output);
$result = array();
foreach($output[2] as $key => $name)
{
    $result[] = array($name,$output[3][$key],$output[4][$key]);
}
echo '<pre>'.print_r($result,true).'</pre>';
?>

输出：

Array
(
    [0] => Array
        (
            [0] => R12345
            [1] => 
            [2] => jpg
        )

    [1] => Array
        (
            [0] => R12345
            [1] => 2
            [2] => jpg
        )

    [2] => Array
        (
            [0] => R12346
            [1] => 
            [2] => jpg
        )

    [3] => Array
        (
            [0] => R12346
            [1] => 2
            [2] => jpg
        )

    [4] => Array
        (
            [0] => R12346
            [1] => 3
            [2] => jpg
        )

)

如何将数组拆分为基于元素

4 个答案: