PHPでimgを置き換える方法

PHP正则提取或更改图片img标记中的任意属性'; //1、取整个图片代码 preg_match('/<\\s*img\\s+[^>]*?src\\s*=\\s*(\\'|\\")(.*?)\\\\1[^>]*?\\/?\\s*>/i',$str,$match); echo $match[0]; //2、取width preg_match('//i',$str,$match); echo $match[1]; //3、取height preg_match('//i',$str,$match); echo $match[1]; //4、取src preg_match('//i',$str,$match); echo $match[1]; /*PHP正则替换图片img标记中的任意属性*/ //1、将src="/uploads/images/20100516000.jpg"替换为src="/uploads/uc/images/20100516000.jpg") print preg_replace('/()/i',"\\${1}uc/images/\\${3}",$str); echo "
"; //2、将src="/uploads/images/20100516000.jpg"替换为src="/uploads/uc/images/20100516000.jpg",并省去宽和高 print preg_replace('/(/i',"\\${1} \\${2}uc/images/\\${3}>",$str); ?>