我正在尝试根据几个临床因素生成特定的治疗算法。在从表单的下拉列表菜单中选择因素时,将提出处理算法。使用 elseif php 命令时,出现语法错误。请帮忙。谢谢。
<?php
        if(($t == '2' && ($n =='1') && ($er=='positive') && ($her == 'negative') && ($ki == 'Low (<14%)') && ($g=='G1') && ($ps == 'premenopause')) || (($t == '3' && ($n =='0') && ($er=='positive') && ($her == 'negative') && ($ki == 'Low (<14%)') && ($g=='G1') && ($ps == 'premenopause')) {  
        echo '<br />';
        echo '<br />';
        echo "T$t";
        echo "N$n";
        echo "M0.   ";
        echo "IIВ stage";
        echo '<br />';
        echo "Patient status: $ps";
        echo '<br />';
        echo "ER/PR status: $er" ;
        echo '<br />';
        echo "Her2/neu status: $her" ;  
        echo '<br />';
        echo "Ki-67 expression: $ki";
        echo '<br />';
        echo "Grade of differentiation: $g";
        echo '<br />';
        echo "Molecular subtype: Luminal А";
        echo '<br />';
        echo '<br />';
        echo '<img src="/img/Tx.png" border=0>';
        echo '<br />';
        echo '<br />';
        echo "$LumA3_1"; }
        else
        {
        echo "That combination does not exist";
        }
        ?>