我目前正在研究一个学校项目,无法弄清楚如何正确地破坏和爆炸阵列。我的目标是能够添加新用户,能够删除用户和更新用户。我需要正确获取我的键值对才能实现这一点。
谢谢
<?php
class index {
function __construct(){}
我的CSV读取结果如下
Array ( [Email = test@mail.com] => FirstName = fake_firstname )
public function display() {
$filename = 'testfile.csv';
$lines = file($filename);
$data = array();
echo "<tr>
<th>Email</th>
<th>First</th>
<th>Last</th>
</tr><br>";
foreach($lines as $info) {
list($key, $value) = explode(',', $info);
$result[$key] = $value;
echo "<pre>";
print_r($result);
echo "</pre>";
}
}
public function add($Fname, $Lname, $Email) {
$this->Fname = $Fname;
$this->Lname = $Lname;
$this->Email = $Email;
$this->person = array('Email'=>$this->Email,'FirstName' =>$this->Fname,
'LastName' =>$this->Lname);
$this->save($this->person);
print_r($this->person);
}
public function save($arr) {
$filename = 'testfile.csv';
$myfile = fopen($filename, "a+") or die("Unable to open file!");
foreach($arr as $key => $value){
$new[] = $key.' = '.$value;
$final = implode(",", $new);
}
fwrite($myfile, $final."\r\n");
fclose($myfile);
}
我的CSV保存结果为以下Email = test@mail.com,FirstName = fake_firstname,LastName = fake_lastname
public function form(){
include('add.html');
}
} // close off class index
?>
答案 0 :(得分:1)
为什么不将csv文件的内容作为字符串获取,使用explode两次,一次使用explode(“,”,$ CSVString),然后为每个索引调用另一个使用explode爆炸(“=”,$ array [$ i])如果需要修剪()围绕第二次爆炸以摆脱结束和开始的空间。请注意,第二次爆炸是使用数组,因此您必须使用
$email = trim(explode("=", $yourArray[0])[1]);
$Fname = trim(explode("=", $yourArray[1])[1]);
$Lname = trim(explode("=", $yourArray[2])[1]);
这个非常紧凑的代码创建了三个数组,每个信息对应一个(mail,Fname,Lname),并直接选择必要的字符串,修剪它并将值放入变量中。 如果您需要进一步的帮助或解释,请告诉我。
答案 1 :(得分:1)
显然,您可以控制.csv文件的结构。所以我说,使用密钥作为.csv中的标题。 personFile.csv应该只从其中的标题开始
personFile.csv
Email,First Name,Last Name
只有那条线
<?php
class index {
function __construct(){}
public function display() {
$filename = 'personFile.csv';
$lines = file($filename);
$data = array(); // store the contents of the file in an associative array for future use?
// the first row is the header
$headers = $lines[0];
$countHeaders = count($headers); // store the count for future use
echo "
<tr>
<th>" . implode("</th><th>",explode(",",$headers)) . "</th>
</tr>";
// array_slice($lines, 1) will return all the lines in $lines except for the first line
foreach(array_slice($lines,1) as $row) {
echo "
<tr>
<td>" . implode("</td><td>",explode(",",$row)) . "</td>
</tr>";
}
}
public function add($Fname, $Lname, $Email) {
$this->Fname = $Fname;
$this->Lname = $Lname;
$this->Email = $Email;
$this->person = array('Email'=>$this->Email,'FirstName' =>$this->Fname,
'LastName' =>$this->Lname);
$this->save($this->person);
print_r($this->person);
}
public function save($arr) {
$filename = 'personFile.csv';
$myfile = fopen($filename, "a+") or die("Unable to open file!");
$final = "\r\n" . implode(',',$arr);
fwrite($myfile, $final);
fclose($myfile);
}
public function form(){
include('add.html');
}
//return true if the person was found and removed. else return false
public function removePersonUsingEmail($emailToRemove) {
$filename = 'personFile.csv';
$lines = file($filename);
// the first row is the header
$headers = $lines[0];
$emailColumn = array_search("Email",$headers);
$lines = array_slice($lines, 1);
// array_slice($lines, 1) will return all the lines in $lines except for the first line
foreach($lines as $rowNum => $row) {
if($row[$emailColumn] === $emailToRemove) {
unset($lines[$rowNum]);
$final = implode(",",$headers);
foreach($lines as $row) {
$final .= "\r\n" . implode(",",$row);
}
$myfile = fopen($filename, "w") or die("Unable to open file!");
fwrite($myfile, $final);
fclose($myfile);
return true;
}
}
return false;
}
} // close off class index
?>
答案 2 :(得分:0)
你也可以爆炸每一行
<?php
$line = 'Email = test@mail.com,FirstName = fake_firstname,LastName = fake_lastname';
$parts = explode( ',', str_replace( array( ' = ', 'Email', 'FirstName', 'LastName'), '', $line ) );
// email = $parts[0]
// firstname = $parts[1]
// lastname = $parts[2]
?>
答案 3 :(得分:0)
list($fname, $lname) = explode(' ', $N1,2);
任何人都可以解释&#34; 2&#34;在这表示?