PHP regular expression extraction random attribute modification in image img Mark-php Tutorial

(Conversion) PHP regular expression extraction any attribute in image img flag modify * PHP regular expression extraction any attribute in image img flag * $ str ?? & Lt; center & gt; & lt; img? Srcuploadsimages20100516000.jpg ?? & Gt; & lt; br? & Gt; PHP regular expression extraction or modification of any attribute modification in image img Mark (convert) PHP regular expression extraction

/* PHP regular expression extraction any attribute in the image img Mark */
$ Str? =? '

PHP regular expression extraction or change any attribute in the img Mark of the image ';

// 1. retrieve the entire image code
Preg_match ('/<\ s * img \ s + [^>] *? Src \ s * = \ s * (\ '| \")(.*?) \ 1 [^>] *? \/? \ S *>/I ', $ str, $ match );
Echo? $ Match [0];

// 2. obtain the width
Preg_match ('// I', $ str, $ match );
Echo? $ Match [1];

// 3. get the height
Preg_match ('// I', $ str, $ match );
Echo? $ Match [1];

// 4. obtain src
Preg_match ('// I', $ str, $ match );
Echo? $ Match [1];

/* PHP regular expression to replace any attribute in the img Mark */
// 1. replace src = "/uploads/images/20100516000.jpg" with src ="/uploads/uc/images/20100516000.jpg ")
Print? Preg_replace ('/()/I', "\$ {1} uc/images/\$ {3}", $ str );
Echo? " ";

// 2. replace src = "/uploads/images/20100516000.jpg" with src ="/uploads/uc/images/20100516000.jpg" and save the width and height
Print? Preg_replace ('/(/I', "\$ {1 }? \ $ {2} uc/images/\ $ {3}> ", $ str );