php/html

To go to previous page in browser. This is much better than history.go(-1)

history.back()

The PHP way of to add ... after number of characters

$out = strlen($in) > 50 ? substr($in,0,50)."..." : $in;

CSS way (not tested)

.ellipsis {
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

placeholder text in input field