PHP - 通过模式

Question

排序阵列我有一个字符串

[ "one", "Two", "FOUR", "Four", "three", "two"] 

我需要创建一个字符串，它看起来像这样的数组：

“一，三，二

一，二，三，四，二

一，二，四，三，四，二“。

我将不胜感激任何帮助。谢谢。

Answer 1

需要短阵语法

$master = [ "one", "Two", "FOUR", "Four", "three", "two"]; 

// Filter $master into arrays containing the appropriate lower, ucfirst and upper values 
$lowerSet = array_filter(
    $master, 
    function($value) { 
     return strtolower($value) == $value; 
    } 
); 

$ucfirstSet = array_filter(
    $master, 
    function($value) { 
     return ucfirst(strtolower($value)) == $value; 
    } 
); 

$upperSet = array_filter(
    $master, 
    function($value) { 
     return strtoupper($value) == $value; 
    } 
); 

function sorting(array $series) { 
    $mi = new MultipleIterator(MultipleIterator::MIT_NEED_ANY); 
    foreach($series as $valueSet) { 
     $mi->attachIterator(new ArrayIterator($valueSet)); 
    } 
    $line = []; 
    foreach($mi as $values) { 
     $line = array_merge($line, $values); 
    } 
    return array_filter($line); 
} 

$lines = [ 
    implode(', ', $lowerSet), 
    implode(', ', sorting([$lowerSet, $ucfirstSet])), 
    implode(', ', sorting([$lowerSet, $ucfirstSet, $upperSet])) 
]; 
echo implode(PHP_EOL, $lines); 

PHP> = 5.4，但将与PHP> = 5.3如果[]工作被替换array()