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正则有关问题 将图片宽度替换为100%

WBOY
WBOYOriginal
2016-06-13 12:13:471061browse

正则问题 将图片宽度替换为100%
宽度不定的图片

$str = '<p><br></p><img    style="max-width:90%" src="<br / alt="正则有关问题 将图片宽度替换为100%" >http://xxxx/uploads/details/142163431741415.jpg"><img    style="max-width:90%" src="<br / alt="正则有关问题 将图片宽度替换为100%" >http://xxxx/uploads/details/14216343172321.jpg"><p><br></p>';


宽度替换为100%

$str = '<p><br></p><img    style="max-width:90%" src="<br / alt="正则有关问题 将图片宽度替换为100%" >http://xxxx/uploads/details/142163431741415.jpg"><img    style="max-width:90%" src="<br / alt="正则有关问题 将图片宽度替换为100%" >http://xxxx/uploads/details/14216343172321.jpg"><p><br></p>';

------解决思路----------------------
$str = '<p><br></p><img    style="max-width:90%" src="<br / alt="正则有关问题 将图片宽度替换为100%" >http://xxxx/uploads/details/142163431741415.jpg"><img    style="max-width:90%" src="<br / alt="正则有关问题 将图片宽度替换为100%" >http://xxxx/uploads/details/14216343172321.jpg"><p><br></p>';

echo preg_replace('/(?<=style="width:).+?px;/i', '100%', $str);


正则有关问题 将图片宽度替换为100%http://xxxx/uploads/details/142163431741415.jpg">正则有关问题 将图片宽度替换为100%http://xxxx/uploads/details/14216343172321.jpg">




------解决思路----------------------
这样呢
echo  preg_replace('/(?<=正则有关问题 将图片宽度替换为100%
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