180307 PHP script - modify page

We want a small script, that we can invoke with an URL, e.g.: [login to view URL]://[login to view URL] The script should be able to modify some of the code by specifying max 10 variables to be replaced, e.g.: from1="xxx" to1="yyy" from2="aaa" to2="123" from3="<a=href=" to3="<a target=_new href=" etc. The script should then output the original page with the changes to the browser. if fromx = "" no change to be made. it should be possible to change strings with a " or ' in the string.