php正则提取html图片(img)src地址与任意属性

01

<?php

02

header(

"Content-Type:text/html;charset=utf-8"

);

03

04

$str

='<div

class

=

"ui-block-a"

align=

"center"

>

05

<ahref=

"online-39.html"

><img

class

=

"lazy"

width=

"131"

height=

"177"

src=

"http://www.smsyun.com/uploads/image/20140620/2014052010425.jpg"

/>

06

<h3>2014年</h3></a>

07

</div>';

08

09

$imgpreg

=

"/<img(.*?)src=\"(.+?)\".*?>/"

;

10

preg_match(

$imgpreg

,

$str

,

$img

);

11

$mycount

=

count

(

$img

)-1;

12

$imgval

=

$iim

[

$mycount

];

13

if

(!

empty

(

$imgval

)){

14

echo

$imgval

;

15

}

else

{

16

echo

'no'

;

17

}

18

?>

01

<?php

02

/*PHP正则提取图片img标记中的任意属性*/

03

$str

=

'<center><imgsrc="/uploads/images/20100516000.jpg"height="120"width="120"><br/>PHP正则提取或更改图片img标记中的任意属性</center>'

;

04

05

//1、取整个图片代码

06

preg_match(

'/<\s*img\s+[^>]*?src\s*=\s*(\'|\")(.*?)\\1[^>]*?\/?\s*>/i'

,

$str

,

$match

);

07

echo

$match

[0];

08

09

//2、取width

10

preg_match(

'/<img.+(width=\"?\d*\"?).+>/i'

,

$str

,

$match

);

11

echo

$match

[1];

12

13

//3、取height

14

preg_match(

'/<img.+(height=\"?\d*\"?).+>/i'

,

$str

,

$match

);

15

echo

$match

[1];

16

17

//4、取src

18

preg_match(

'/<img.+src=\"?(.+\.(jpg|gif|bmp|bnp|png))\"?.+>/i'

,

$str

,

$match

);

19

echo

$match

[1];

20

21

/*PHP正则替换图片img标记中的任意属性*/

22

//1、将src="/uploads/images/20100516000.jpg"替换为src="/uploads/uc/images/20100516000.jpg")

23

printpreg_replace(

'/(<img.+src=\"?.+)(images\/)(.+\.(jpg|gif|bmp|bnp|png)\"?.+>)/i'

,"\${1}uc/images/\${3}",

$str

);

24

echo

"<hr/>"

;

25

26

//2、将src="/uploads/images/20100516000.jpg"替换为src="/uploads/uc/images/20100516000.jpg",并省去宽和高

27

printpreg_replace(

'/(<img).+(src=\"?.+)images\/(.+\.(jpg|gif|bmp|bnp|png)\"?).+>/i'

,"\${1}\${2}uc/images/\${3}>",

$str

);

28

?>