php 正则提取数字

<?php
//$patterns = "/^(http|https):\/\/(.)*\.(.)*$/";
$patterns = "/\d+/";
$strs="23345swwyuiopbfASWEDD4667";
preg_match_all($patterns,$strs,$arr);
print_r($arr);
?>

Array
(
    [0] => Array
        (
            [0] => 23345
            [1] => 4667
        )

)

<?php
//$patterns = "/^(http|https):\/\/(.)*\.(.)*$/";
$patterns = "/\d/";
$strs="23345swwyuiopbfASWEDD4667";
preg_match_all($patterns,$strs,$arr);
print_r($arr);
?>

Array
(
    [0] => Array
        (
            [0] => 2
            [1] => 3
            [2] => 3
            [3] => 4
            [4] => 5
            [5] => 4
            [6] => 6
            [7] => 6
            [8] => 7
        )

)

<?php

 

$str = "sssefss$2345.1234dddfffeds$456$00.23RR";

 

$pattern = '/\$(\d+\.?\d+)/';

 

if(preg_match_all($pattern, $str, $match)){

    echo '<pre>';

    print_r($match);

}else{

    echo '没有找到！';

}

 

结果：

Array

(

    [0] => Array

        (

            [0] => $2345.1234

            [1] => $456

            [2] => $00.23

        )

 

    [1] => Array

        (

            [0] => 2345.1234

            [1] => 456

            [2] => 00.23

        )

 

)