php正則提取html圖片(img)src地址與任意屬性的方法
阿新 • • 發佈：2018-11-08
<?php
/*PHP正則提取圖片img標記中的任意屬性*/
$str
=
'<center><img src="/uploads/images/2017020716154162.jpg" height="120" width="120"><br />PHP正則提取或更改圖片img標記中的任意屬性</center>'
;
//1、取整個圖片程式碼
preg_match(
'/<\s*img\s+[^>]*?src\s*=\s*(\'|\")(.*?)\\1[^>]*?\/?\s*>/i',
$str
,
$match
);
echo
$match
[0];
//2、取width
preg_match(
'/<img.+(width=\"?\d*\"?).+>/i'
,
$str
,
$match
);
echo
$match
[1];
//3、取height
preg_match(
'/<img.+(height=\"?\d*\"?).+>/i'
,
$str
,
$match
);
echo
$match[1];
//4、取src
preg_match(
'/<img.+src=\"?(.+\.(jpg|gif|bmp|bnp|png))\"?.+>/i'
,
$str
,
$match
);
echo
$match
[1];
/*PHP正則替換圖片img標記中的任意屬性*/
//1、將src="/uploads/images/20100516000.jpg"替換為src="/uploads/uc/images/2017020716154162.jpg")
print
preg_replace('/(<img.+src=\"?.+)(images\/)(.+\.(jpg|gif|bmp|bnp|png)\"?.+>)/i'
,"\${1}uc/images/\${3}",
$str
);
echo
"<hr/>"
;
//2、將src="/uploads/images/20100516000.jpg"替換為src="/uploads/uc/images/2017020716154162.jpg",並省去寬和高
print
preg_replace(
'/(<img).+(src=\"?.+)images\/(.+\.(jpg|gif|bmp|bnp|png)\"?).+>/i'
,"\${1} \${2}uc/images/\${3}>",
$str
);
?>