PHP字符串分解

Question

什么是分解以下字符串的最佳方式：

$str = '/input-180x129.png' 

为以下：

$array = array(
    'name' => 'input', 
    'width' => 180, 
    'height' => 129, 
    'format' => 'png', 
); 

Answer 1

我只想用preg_split分裂the string into several variables和put them into an array，如果你一定要。

$str = 'path/to/input-180x129.png'; 

// get info of a path 
$pathinfo = pathinfo($str); 
$filename = $pathinfo['basename']; 

// regex to split on "-", "x" or "." 
$format = '/[\-x\.]/'; 

// put them into variables 
list($name, $width, $height, $format) = preg_split($format, $filename); 

// put them into an array, if you must 
$array = array(
    'name'  => $name, 
    'width'  => $width, 
    'height' => $height, 
    'format' => $format 
); 

---

Esailija最伟大的评论之后，我做了新的代码应该更好地工作！

我们只需从preg_match获得所有匹配，并且与之前的代码完全相同。

$str = 'path/to/input-180x129.png'; 

// get info of a path 
$pathinfo = pathinfo($str); 
$filename = $pathinfo['basename']; 

// regex to match filename 
$format = '/(.+?)-([0-9]+)x([0-9]+)\.([a-z]+)/'; 

// find matches 
preg_match($format, $filename, $matches); 

// list array to variables 
list(, $name, $width, $height, $format) = $matches; 
// ^that's on purpose! the first match is the filename entirely 

// put into the array 
$array = array(
    'name'  => $name, 
    'width'  => $width, 
    'height' => $height, 
    'format' => $format 
); 

Answer 2

这可能是一个缓慢的&愚蠢的解决方案，但它更易于阅读：

$str = substr($str, 1);  // /input-180x129.png => input-180x129.png 
$tokens = explode('-', $str); 
$array = array(); 
$array['name'] = $tokens[0]; 
$tokens2 = explode('.', $tokens[1]); 
$array['format'] = $tokens2[1]; 
$tokens3 = explode('x', $tokens2[0]); 
$array['width'] = $tokens3[0]; 
$array['height'] = $tokens3[1]; 
print_r($array); 

// will result: 
$array = array(
    'name' => 'input', 
    'width' => 180, 
    'height' => 129, 
    'format' => 'png', 
);