The document discusses various ways to submit HTML forms using PHP. It explains how to create basic forms with input fields like text, password, submit buttons and how the form data is accessed in the PHP file using $_GET and $_POST superglobals. It also discusses forms with select, checkbox, file inputs and how to validate and process the submitted data in PHP. Examples are given to illustrate form submission with different input types and form validation.

1. ก F ก F PHP
HTML Form
ก F ก F PHP
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2. Tag Form
Tag input F F F tag form
Tag form ˈ F F F F F F F tag input F
.php.php
ก F F F ก F F .php F
Form .PHP file
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3. Tag Form
Attribute ˈ F tag form method, action
Attribute action F ก F F form
file file
Attribute method F ก F F F form ˈ GET
( F address bar F index.php?id=1&name=John )( F address bar F index.php?id=1&name=John )
POST ( F F address bar)
Tag form ˈ F tag <input type=“submit” />
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4. Tag Form
<form action= F F ก .php method=GET
POST>
……
……
</form></form>
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5. Tag input type submit
Tag input Attribute type ˈ submit ˈ ˁ ก
Attribute value F ˁ
Tag input type submit F F F tag form
F F F ก ˁ submit form F browser ʽ F
ก F Attribute action formก F Attribute action form
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6. Tag Form
<form action="html_form_manage.php" method="GET">
<input type="submit" value=" ก " />
</form>
ก F F ก ˁ ก F browser ʽ F
html_form_manage.php ก F Attribute actionhtml_form_manage.php ก F Attribute action
form
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7. ก F F F ก submit form
F F F ก submit form F F F
<form action="textbox_input_manage.php"
method="get">
<input type="text" id="textbox1" name="textbox1" />
<input type="submit" value=" ก " /><input type="submit" value=" ก " />
</form>
ก F Tag input Attribute id name
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8. ก F F F ก submit form
ก F F ก F F F F F
textbox_input_manage.php F
<?php
$textbox1=$_GET["textbox1"];
echo $textbox1;echo $textbox1;
?>
F ก ก F ก textbox F F
textbox_input_manage.php
projetcsoft.biz F F ก

9. ก F F F ก submit form
• ก F ก $textbox1=$_GET["textbox1"];
• F F tag input F textbox1 (ก
attribute name attribute id) ก F Fattribute name attribute id) ก F F
$textbox1
• ก F address bar F ก F F GET
F ก F F F tag form attribute action
textbox_input_manage.php?textbox1=PHP
• textbox_input_manage.php ก attribute action
form action="textbox_input_manage.php"
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10. ก F F F ก submit form
textbox1 ก กAttribute name id<input type="text"
id="textbox1" name="textbox1" />
textbox_input_manage.php?textbox1=PHP
textbox1=PHP
=PHP กก F F F F F F “PHP” textbox1=PHP กก F F F F F F “PHP” textbox1
กF ก submit
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11. ก F F F ก submit form
ก F F ก F F address bar F Attribute Form
method="get" ˈ method="post"
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12. ก F F F ก submit form
ก F ก attribute Form ก
method="get" ˈ method="post" F
ˈ F F ก F ก
$textbox1=$_GET["textbox1"]; ˈ
$textbox1=$_POST["textbox1"]; F$textbox1=$_POST["textbox1"]; F
projetcsoft.biz F F ก

13. ก F F F ก submit form
projetcsoft.biz F F ก

14. ก Username Password
<form action="check_login.php" method="post">
<table><tr><td align="right">Username:</td>
<td><input type="text" id="username" name="username"
/></td>
</tr><tr><td align="right">Password:</td>
<td><td>
<input type="password" id="password" name="password" />
</td></tr><tr><td align="right"></td>
<td><input type="submit" value="Login" /></td>
</tr>
</table>
</form>
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15. ก Username Password
F check_login.php
<?php
$username=$_POST["username"];
$password=$_POST["password"];
if(($username=="administrator")&&($password=="system"))
{{
echo "Login success";
}
else
{
echo "Login error ! <br />";
echo "<a href="login.php">Click to login agian</a>";
}
?>
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16. ก Username Password 2
<?php if($_GET["err"]=="1"){echo "Login error !";} ?>
<form action="check_login2.php" method="post">
<table><tr><td align="right">Username:</td>
<td><input type="text" id="username" name="username"
/></td>
</tr><tr><td align="right">Password:</td>
<td>
<input type="password" id="password" name="password" />
</td></tr><tr><td align="right"></td>
<td><input type="submit" value="Login" /></td>
</tr>
</table>
</form>
projetcsoft.biz F F ก

17. ก Username Password 2
F check_login2.php
<?php
$username=$_POST["username"];
$password=$_POST["password"];
if(($username=="administrator")&&($password=="system"))
{{
echo "Login success";
}
else
{
echo "<script>location='login2.php?err=1'</script>";
exit();
}
?>
projetcsoft.biz F F ก

18. ก Username Password 2
ก F F F username password F ก F F ก
echo "<script>location='login2.php?err=1'</script>";
exit();
F browser F login2.php F F FF browser F login2.php F F F
?err=1 F
F ก F login2.php
<?php if($_GET["err"]=="1"){echo "Login error !";} ?>
F F Login error ! ก F F err=1
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19. ก F F ก Tag select
<form method="post" action="select_input_manage.php">
<select id="number" name="number" >
<option value="">Please select umber</option>
<option value="1">One</option>
<option value="2">Two</option><option value="2">Two</option>
<option value="3">Three</option>
</select>
<input type="submit" value="OK" />
</form>
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20. ก F F ก Tag select
ก F tag select attribute value
Attribute value F ก F F F F ก ก ก
F F F F ก ก Two F
$_POST["number"] F select_input_manage.php
F F ก ˈ 2 F value="2" ก TwoF F ก ˈ 2 F value="2" ก Two
<option value="2">Two</option>
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21. ก F F ก Tag select
<?php
$num=$_POST["number"];
if($num=="")
{echo "You have not selected.";}
else if($num=="1")
{echo "You have selected One.";}{echo "You have selected One.";}
else if($num=="2")
{echo "You have selectedTwo.";}
else if($num=="3")
{echo "You have selectedTree.";}
?>
<br />
<a href="select_input_submit.php">Back to last page</a>
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22. ก F F ก check box
<form method="post" action="checkbox_manage.php" >
Please select your programing langues skill.<br /><br />
<input type="checkbox" value="C++" id="cpp"
name="cpp" />C++
<input type="checkbox" value="Java" id="java"<input type="checkbox" value="Java" id="java"
name="java" />Java
<input type="checkbox" value="PHP" id="php"
name="php" />PHP
<input type="submit" value="OK" />
</form>
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23. ก F F ก check box
F checkbox_manage.php
<?php
echo "You have ";
echo $_POST["cpp"]." ";echo $_POST["cpp"]." ";
echo $_POST["java"]." ";
echo $_POST["PHP"]." ";
echo " skill.";
?>
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24. ก F F ก check box
ก code F F F F check box PHP F
F F ?
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25. ก ก,
<form method="post" action="calculator_result.php">
<input type="text" id="num1" name="num1" size="3"
/>
<select id="opp" name="opp"><option
value="add">+</option><option value="sub">-value="add">+</option><option value="sub">-
</option></select>
<input type="text" id="num2" name="num2" size="3"
/>
<input type="submit" value="=" size="100"/>
</form>
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26. ก ก,
<?php
$num1=$_POST["num1"];
$num2=$_POST["num2"];
if($_POST["opp"]=="add")
{$result=$num1+$num2;{$result=$num1+$num2;
echo $num1."+".$num2." = ".$result;}
else if($_POST["opp"]=="sub")
{$result=$num1-$num2;
echo $num1."-".$num2." = ".$result;
}
?>
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27. ก ก, 2
<form method="post" action="calculator_result2.php">
<input type="text" id="num1" name="num1" /><br />
<input type="checkbox" value="add" id="op1"
name="op1" />+<br />
<input type="checkbox" value="sub" id="op2"<input type="checkbox" value="sub" id="op2"
name="op2" />-<br />
<input type="text" id="num2" name="num2" /><br />
<input type="submit" value="=" />
</form>
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28. ก ก, 2
<?php
$num1=$_POST["num1"];
$num2=$_POST["num2"];
if($_POST["op1"]=="add")
{ $result=$num1+$num2;
echo $num1."+".$num2."=".$result."<br />";echo $num1."+".$num2."=".$result."<br />";
}
if($_POST["op2"]=="sub")
{ $result=$num1-$num2;
echo $num1."-".$num2."=".$result."<br />";
}
?>
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29. ก F F F F ˈ F ก F
<form action="multiply.php" method="get">
<select id="num" name="num">
<option value="2">2</option>
<option value="3">3</option>
</select></select>
<input type="submit" value="show !" /></form>
<table>
projetcsoft.biz F F ก

30. ก F F F F ˈ F ก F
<table><?php
$num=$_GET["num"];
$count=1;
while($count<=12)
{ $result=$num*$count;
echo "<tr>";echo "<td>".$num."</td>";echo "<tr>";echo "<td>".$num."</td>";
echo "<td>X</td>";
echo "<td>".$count."=</td>";
echo "<td>".$result."</td>";echo "</tr>";
$count++;}
?></table>
source code F ก slice F F
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31. Input file
Tag name input
Type file
F ก F tag form input file F tag form F F
attribute enctype="multipart/form-data" tag form F
FF
Tag input attribute id name F F F ก tag
input
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32. Input file
<form action="upload_file.php" method="post"
enctype="multipart/form-data" >
upload file(.jpg)
<input type="file" name="file_1" id="file_1" />
<input type="submit" value="upload" /><input type="submit" value="upload" />
</form>
projetcsoft.biz F F ก

33. Input file
<?php
$file_1=$_FILES["file_1"];
$type = substr($file_1["name"], strpos($file_1["name"],"."),
strlen($file_1["name"])); $type =strtolower($type );
if($type!= ".jpg")
{echo "Please select .jpg file<br />";{echo "Please select .jpg file<br />";
echo "<a href="input_file.php" >Click to upload agian</a>";
} else{
copy($file_1["tmp_name"],"upload_img/upload_img.jpg");
echo "<img src="upload_img/upload_img.jpg" />";
}
?>
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34. Input file
$file_1=$_FILES["file_1"];
ก F $file_1 F F input file attribute
id="file_1" name="file_1"
$file_1["name"] return F upload F
$type = substr($file_1["name"],$type = substr($file_1["name"],
strpos($file_1["name"],"."), strlen($file_1["name"])); ก
ก F upload ก F $type
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35. Input file
$type F F F ก “.jpg” F F F F
F F link F F upload ก
F F F F F ก “.jpg”
copy($file_1["tmp_name"],"upload_img/upload_img.jpg");
F upload F F folder upload_imgF upload F F folder upload_img
F ˈ upload_img.jpg
projetcsoft.biz F F ก