Question

我有这个模式，我用它来提取/ image /字段后面的数字，我已经尝试过这个模式，我已经在http://www.functions-online.com/preg_match_all.html在线查看了它，它为第一个链接提供了所需的输出但对于其他链接，它没有提供所需的输出这是我的模式

  /\sample.com\/image\/(.*)\//

这是我的字符串

     Mario Ermito photos by sample.com Mario Ermito Latest News, Photos, Biography, Videos and Wallpapers [img]http://xyz.sample.com/image/4205476/600full-mario-ermito.jpg[/img][img]http://xyz.sample.com/image/4453948/600full-my-profile.jpg[/img][img]http://xyz.sample.com/image/427185/600full-eagle-eye-poster.jpg[/img][img]http://xyz.sample.com/image/1323868/600full-alexis-bledel.jpg[/img][img]http://xyz.sample.com/image/2505314/600full-monroe-lee.jpg[/img][img]http://xyz.sample.com/image/3300481/600full-cindy-crawford.jpg[/img][img]http://xyz.sample.com/image/1046646/600full-pitura-freska.jpg[/img][img]http://xyz.sample.com/image/4322305/600full-kristin-kreuk.jpg[/img][img]http://xyz.sample.com/image/4261476/600full-kang-so--ra.jpg[/img][img]http://xyz.sample.com/image/3386911/600full-summer-brielle.jpg[/img][img]http://xyz.sample.com/image/4663949/600full-the-closer-artwork.jpg[/img]

例如

我想在/ image / field之后只提取数字我不想要图像名称我想要的输出是

     4205476
     4453948
      427185

等字符串

中的所有数字

Answer 1

使用此正则表达式~\/\image\/(.*?)\/~

<?php
$str='     Mario Ermito photos by sample.com Mario Ermito Latest News, Photos, Biography, Videos and Wallpapers [img]http://xyz.sample.com/image/4205476/600full-mario-ermito.jpg[/img][img]http://xyz.sample.com/image/4453948/600full-my-profile.jpg[/img][img]http://xyz.sample.com/image/427185/600full-eagle-eye-poster.jpg[/img][img]http://xyz.sample.com/image/1323868/600full-alexis-bledel.jpg[/img][img]http://xyz.sample.com/image/2505314/600full-monroe-lee.jpg[/img][img]http://xyz.sample.com/image/3300481/600full-cindy-crawford.jpg[/img][img]http://xyz.sample.com/image/1046646/600full-pitura-freska.jpg[/img][img]http://xyz.sample.com/image/4322305/600full-kristin-kreuk.jpg[/img][img]http://xyz.sample.com/image/4261476/600full-kang-so--ra.jpg[/img][img]http://xyz.sample.com/image/3386911/600full-summer-brielle.jpg[/img][img]http://xyz.sample.com/image/4663949/600full-the-closer-artwork.jpg[/img]';
preg_match_all('~\/\image\/(.*?)\/~', $str, $matches);
print_r($matches[1]);

<强> OUTPUT :

Array
(
    [0] => 4205476
    [1] => 4453948
    [2] => 427185
    [3] => 1323868
    [4] => 2505314
    [5] => 3300481
    [6] => 1046646
    [7] => 4322305
    [8] => 4261476
    [9] => 3386911
    [10] => 4663949
)

enter image description here

Answer 2

您需要调整正则表达式：

$regex = '@sample\.com/image/([0-9]+)/@'

preg_match_all('@sample\.com/image/([0-9]+)/@', $str, $m);
print_r($m);

预期产出：

Array
(
    [0] => Array
        (
            [0] => sample.com/image/4205476/
            [1] => sample.com/image/4453948/
            [2] => sample.com/image/427185/
            [3] => sample.com/image/1323868/
            [4] => sample.com/image/2505314/
            [5] => sample.com/image/3300481/
            [6] => sample.com/image/1046646/
            [7] => sample.com/image/4322305/
            [8] => sample.com/image/4261476/
            [9] => sample.com/image/3386911/
            [10] => sample.com/image/4663949/
        )

    [1] => Array
        (
            [0] => 4205476
            [1] => 4453948
            [2] => 427185
            [3] => 1323868
            [4] => 2505314
            [5] => 3300481
            [6] => 1046646
            [7] => 4322305
            [8] => 4261476
            [9] => 3386911
            [10] => 4663949
        )

)

现在您需要记住，PHP将返回它匹配的所有内容，包括正则表达式字符串的不需要的部分。

从PHP手册： http://www.php.net/manual/en/function.preg-match-all.php

对结果进行排序，以便$ matches [0]是一个完整模式的数组匹配，$ matches [1]是由第一个匹配的字符串数组带括号的子模式，依此类推。

Answer 3

试试这个：

/.*sample\.com\/image\/(\d+)\/.*/

Regular expression visualization

Debuggex Demo

preg_match_all用于此模式

3 个答案: