您必须回显整个JScript函数，因为PHP不知道您在做什么:

You have to echo the whole JScript function because PHP doesn't know what you're doing:

echo "<script type = 'text/javascript'>function GetCellValues()
    {
        //echo('Save'); use document.write()?
        var str = '';
        var rows = document.getElementsByTagName('tr');
        var table=document.getElementById("project");
        for (var i=0;i<table.rows[0].cells.length;i++)
        {
            str = str + (table.rows[0].cells[i].innerHTML) + ', ' ;     
        }
        for (var c = 1 ; c < rows.length ; c++)
        {
            str += '\n' + "0" + c + ', ';
            var row = rows[c];
            var inputs = row.getElementsByTagName('input');                
            for (var k = 0 ; k < inputs.length ; k++)
            {
                str += inputs[k].value + ', ';
            }
        }
    }</script>";