数组PHP的substr()函数

时间:2013-09-05 07:48:08

标签: php substr implode

我有一个会生成字符串数组的代码....现在我的问题是我需要对数组的每个结果进行substr但我认为数组不允许在substr ...中使用...

请帮助:

CODE:

<?php
$file = 'upload/filter.txt';
$searchfor = $_POST['search'];
$btn = $_POST['button'];
$sum = 0;

if($btn == 'search') {

//prevents the browser from parsing this as HTML.
header('Content-Type: text/plain');

// get the file contents, assuming the file to be readable (and exist)
$contents = file_get_contents($file);

// escape special characters in the query
$pattern = preg_quote($searchfor, '/');

// finalise the regular expression, matching the whole line
$pattern = "/^.*$pattern.*\$/m";


// search, and store all matching occurences in $matches
if(preg_match_all($pattern, $contents, $matches)){
echo "Found matches:\n";
$result = implode("\n", $matches[0]);
echo $result;


 }
else{
 echo "No matches found";
 }


 }
 ?>

$匹配数组...我需要为$ matches

的每个结果加下一个

3 个答案:

答案 0 :(得分:2)

您可以使用array_walk

function fcn(&$item) {
   $item = substr(..do what you want here ...);
}

array_walk($matches, "fcn");

答案 1 :(得分:2)

正确使用array_walk

array_walk( $matches, substr(your area));

Array_map接受多个数组

array_map(substr(your area),  $matches1, $origarray2);

在你的情况下

 array_map(substr(your area),  $matches);

了解更多:

array_map

array_walk

答案 2 :(得分:0)

要在数组中查找子字符串,我在生产站点上使用了此功能,效果很好。

我将数组转换为集合,因为它更易于管理。

public function substrInArray($substr, Array $array) {
    $substr = strtolower($substr);
    $array = collect($array); // convert array to collection

    return $body_types->map(function ($array_item) {
        return strtolower($array_item);
    })->filter(function ($array_item) use ($substr) {
        return substr_count($array_item, $substr);
    })->keys()->first();

}

这将从第一个匹配项中返回密钥,这只是您可以修改的示例。如果找不到任何内容,则返回null