How the PHP form displays the value of the multi box when it is modified contains the selected and unchecked

How the PHP form displays the value of the multi box when it is modified contains the selected and unchecked
PHP form in the changes, you need to first find out the data from the database to display, but the multi-box how to display the selected and not selected Ah! This is what I did when I showed the values I queried from the database in the PHP modification page, and I really don't know what to write: Echo 'User Hobby';
$newstring = "Play football, play basketball, play ping-pong badminton";
$new = "Play football and play ping-pong badminton";
$one = "Play football and play badminton";
$newarray = Arrar ("Play football", "Play Basketball", "play Table tennis", "play Badminton");
$len = strlen ($resu ["Hobbet"]);
$string = $resu ["Hobbet"];
Print_r ($string);d ie ();
Print_r (substr ($string, 9,21));d ie ();
if (Strstr ($newstring, $string) = = "Play football play basketball play table tennis Play Badminton") {
if (substr ($string, 9,18) = = "Play basketball") {
echo "JDLJFL";d ie ();
Echo ' Play football Play Basketball Play Table Tennis Play Badminton';
}else{
Echo ' Play football Play Basketball Play Table Tennis Play Badminton';
}
}elseif (Strstr ($newstring, $string) = = "Play basketball play table tennis Play Badminton") {
if (substr ($string, 9,21) = = "Play Table tennis") {
Echo ' Play football Play Basketball Play Table Tennis Play Badminton';
}else{
Echo ' Play football Play Basketball Play Table Tennis Play Badminton';
}

}elseif (Strstr ($newstring, $string) = = "Play table tennis and Play badminton") {
if (substr ($string, 12,24) = = "Play Badminton") {
Echo ' Play football Play Basketball Play Table Tennis Play Badminton';
}else{
Echo ' Play football Play Basketball Play Table Tennis Play Badminton';
}}elseif (Strstr ($newstring, $string) = = "Play Badminton") {
Echo ' Play football Play Basketball Play Table Tennis Play Badminton';
}else{
echo "Woshishui";d ie ();
Echo ' Play football Play Basketball Play Table Tennis Play Badminton';
}
/* Switch ($len) {
Case 3:
if (substr ($resu ["Hobbet"],0,1) = = "Kick") {
Echo ' Play football Play Basketball Play Table Tennis Play Badminton';
}else{
Echo ' Play football Play Basketball Play Table Tennis Play Badminton';
}
}
Break

Case 4:
echo "";
Default echo "1"; */

Echo '';
------to solve the idea----------------------
Put all the values into an array

You can check it out, the rest is left unchecked.
------to solve the idea----------------------
All right, top you.

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