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rewrite add.php (take advantage of array) #4

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rewrite add.php (take advantage of array) #4

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9495736
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Nov 6, 2017
a1e5109
revision add.php
Nov 6, 2017
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50 changes: 31 additions & 19 deletions add.php
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Original file line number Diff line number Diff line change
Expand Up @@ -9,38 +9,50 @@
include_once("config.php");

if(isset($_POST['Submit'])) {
$name = mysqli_real_escape_string($mysqli, $_POST['name']);
$age = mysqli_real_escape_string($mysqli, $_POST['age']);
$email = mysqli_real_escape_string($mysqli, $_POST['email']);


unset($_POST['Submit']);
//escape string function
$_POST = escapeStringArr($_POST);

// checking empty fields
if(empty($name) || empty($age) || empty($email)) {

if(empty($name)) {
echo "<font color='red'>Name field is empty.</font><br/>";
}

if(empty($age)) {
echo "<font color='red'>Age field is empty.</font><br/>";
}

if(empty($email)) {
echo "<font color='red'>Email field is empty.</font><br/>";
}

$validateStatus = validatePost($_POST);
if($validateStatus['isValid']) { //if having empty fields
//print error text
echo $validateStatus['err'];
//link to the previous page
echo "<br/><a href='javascript:self.history.back();'>Go Back</a>";
} else {
// if all the fields are filled (not empty)

//insert data to database
$result = mysqli_query($mysqli, "INSERT INTO users(name,age,email) VALUES('$name','$age','$email')");
$sql = "INSERT INTO users (`".implode("`, `" , array_keys($_POST))."`) VALUES ('".implode("', '" , $_POST)."')";
$result = mysqli_query($mysqli, $sql);

//display success message
echo "<font color='green'>Data added successfully.";
echo "<br/><a href='index.php'>View Result</a>";
}
}

function escapeStringArr($postArr){
foreach ($postArr as $key => $value) {
$postArr[$key] = mysqli_real_escape_string($mysqli, $value);
}
return $postArr;
}

function validatePost($postArr){
$err = "";
$isValid = true;
foreach ($postArr as $key => $value) {
if(empty($value)){
$err = $err."<font color='red'>".$key." field is empty.</font><br/>";
$isValid = false;
}
}
return array('err' => $err , 'isValid' => $isValid);
}

?>
</body>
</html>