PHP for循环在第一次迭代后停止
对于一个项目，我正在尝试用PHP做一些事情。它需要一个PHP for循环在第一次迭代后停止,php,loops,Php,Loops,对于一个项目，我正在尝试用PHP做一些事情。它需要一个for循环，并包含一个循环。初始循环中的for循环按预期运行。它通过变量循环并停止一次$i等于计数（$tasks） 但是，当我复制并粘贴完全相同的循环时，现在使用$tasklists只需一次迭代，循环就会停止。请注意，当我测试count（$tasklists）时，它会返回示例3，当我回显$I时，它会在循环中第一次回显0 下面是带有一堆注释的代码 // First let's break up all the tasklists the pro
forfor$i计数（$tasks）$tasklistscount（$tasklists）$I// First let's break up all the tasklists the project has
$tasklists = explode('&', $data['proj_tasklists']);
// Now lets get all the tasks for each tasklist
for($i = 0; $i < count($tasklists); $i++) {
// Get list_tasks from the tasklist
$sql_get = "SELECT * FROM tasklists WHERE list_id='".$tasklists[$i]."'";
$result_get = mysqli_query($con, $sql_get);
if($result_get) {
// Now load in the variable
while($results = mysqli_fetch_array($result_get)) {
$data['list_tasks'] = $results['list_tasks'];
};
// Now let's break that up
$tasks = explode('&',$data['list_tasks']);
// Now reset list_tasks
$data['list_tasks'] = '';
// Do something for every task
for($i = 0; $i < count($tasks); $i++) {
// And get the info for the set task
$sql_get = "SELECT * FROM tasks WHERE task_id='".$tasks[$i]."'";
$result_get = mysqli_query($con, $sql_get);
if($result_get) {
// Now load it's task_user in a variable
while($results = mysqli_fetch_array($result_get)) {
$data['task_user'] = $results['task_user'];
};
// Check if that is the same as that of the user whom was deleted
if($data['task_user'] == $data['user_id']) {
// If the Id is the same update it to ''
$sql_update = "UPDATE tasks SET task_user='' WHERE task_id='".$tasks[$i]."'";
if (mysqli_query($con, $sql_update)) {
// If that worked then add this to the list of addjusted IDs
// First check if the variable is empty or not
if($data['adjusted'] == '') {
// Add the ID plainly
$data['adjusted'] = $tasks[$i];
} else {
// Otherwise preceed the ID with an &
$data['adjusted'] = $data['adjusted'].'&'.$tasks[$i];
};
} else {
// Return an error
echo json_encode(array(
'status'=>'unsuccesful',
'where'=>3
));
// Exit the php before it returns an succes state
exit();
};
};
// Now reset task_user
$data['task_user'] = '';
} else {
// Return an error
echo json_encode(array(
'status'=>'unsuccesful',
'where'=>2
));
// Exit the php before it returns an succes state
exit();
};
};
} else {
// Return an error
echo json_encode(array(
'status'=>'unsuccesful',
'where'=>1
));
// Exit the php before it returns an succes state
exit();
};
};
//首先，让我们分解项目中的所有任务列表
$tasklists=分解（'&'，$data['proj_tasklists']）；
//现在让我们获取每个任务列表的所有任务
对于（$i=0；$i“未成功”，
'其中'=>3
));
//在返回成功状态之前退出php
退出（）；
};
};
//现在重置任务\用户
$data['task_user']=''；
}否则{
//返回错误
echo json_编码（数组(
“状态”=>“未成功”，
'其中'=>2
));
//在返回成功状态之前退出php
退出（）；
};
};
}否则{
//返回错误
echo json_编码（数组(
“状态”=>“未成功”，
'其中'=>1
));
//在返回成功状态之前退出php
退出（）；
};
};
for ($i = 0; $i < $yourVar1; i++){
//some code
for ($a =0; $a < $yourVar2; a++){
//some code
}
//some code
}
for（$i=0；$i<$yourVar1；i++）{
//一些代码
对于（$a=0；$a<$yourVar2；a++）{
//一些代码
}
//一些代码
}
希望这对您有所帮助您在这两个for循环中都使用了$i变量。这将覆盖第一个循环中的$i
for ($i = 0; $i < $yourVar1; i++){
//some code
for ($a =0; $a < $yourVar2; a++){
//some code
}
//some code
}
// First let's break up all the tasklists the project has
$tasklists = explode('&', $data['proj_tasklists']);
// Now lets get all the tasks for each tasklist
for($i = 0; $i < count($tasklists); $i++) {
// Get list_tasks from the tasklist
$sql_get = "SELECT * FROM tasklists WHERE list_id='".$tasklists[$i]."'";
$result_get = mysqli_query($con, $sql_get);
if($result_get) {
// Now load in the variable
while($results = mysqli_fetch_array($result_get)) {
$data['list_tasks'] = $results['list_tasks'];
};
// Now let's break that up
$tasks = explode('&',$data['list_tasks']);
// Now reset list_tasks
$data['list_tasks'] = '';
// Do something for every task
for($z = 0; $z < count($tasks); $z++) {
// And get the info for the set task
$sql_get = "SELECT * FROM tasks WHERE task_id='".$tasks[$i]."'";
$result_get = mysqli_query($con, $sql_get);
if($result_get) {
// Now load it's task_user in a variable
while($results = mysqli_fetch_array($result_get)) {
$data['task_user'] = $results['task_user'];
};
// Check if that is the same as that of the user whom was deleted
if($data['task_user'] == $data['user_id']) {
// If the Id is the same update it to ''
$sql_update = "UPDATE tasks SET task_user='' WHERE task_id='".$tasks[$i]."'";
if (mysqli_query($con, $sql_update)) {
// If that worked then add this to the list of addjusted IDs
// First check if the variable is empty or not
if($data['adjusted'] == '') {
// Add the ID plainly
$data['adjusted'] = $tasks[$i];
} else {
// Otherwise preceed the ID with an &
$data['adjusted'] = $data['adjusted'].'&'.$tasks[$i];
};
} else {
// Return an error
echo json_encode(array(
'status'=>'unsuccesful',
'where'=>3
));
// Exit the php before it returns an succes state
exit();
};
};
// Now reset task_user
$data['task_user'] = '';
} else {
// Return an error
echo json_encode(array(
'status'=>'unsuccesful',
'where'=>2
));
// Exit the php before it returns an succes state
exit();
};
};
} else {
// Return an error
echo json_encode(array(
'status'=>'unsuccesful',
'where'=>1
));
// Exit the php before it returns an succes state
exit();
};
};
for（$i=0；$i<$yourVar1；i++）{
//一些代码
对于（$a=0；$a<$yourVar2；a++）{
//一些代码
}
//一些代码
}
//首先，让我们分解项目中的所有任务列表
// First let's break up all the tasklists the project has
$tasklists = explode('&', $data['proj_tasklists']);
// Now lets get all the tasks for each tasklist
for($i = 0; $i < count($tasklists); $i++) {
// Get list_tasks from the tasklist
$sql_get = "SELECT * FROM tasklists WHERE list_id='".$tasklists[$i]."'";
$result_get = mysqli_query($con, $sql_get);
if($result_get) {
// Now load in the variable
while($results = mysqli_fetch_array($result_get)) {
$data['list_tasks'] = $results['list_tasks'];
};
// Now let's break that up
$tasks = explode('&',$data['list_tasks']);
// Now reset list_tasks
$data['list_tasks'] = '';
// Do something for every task
for($z = 0; $z < count($tasks); $z++) {
// And get the info for the set task
$sql_get = "SELECT * FROM tasks WHERE task_id='".$tasks[$i]."'";
$result_get = mysqli_query($con, $sql_get);
if($result_get) {
// Now load it's task_user in a variable
while($results = mysqli_fetch_array($result_get)) {
$data['task_user'] = $results['task_user'];
};
// Check if that is the same as that of the user whom was deleted
if($data['task_user'] == $data['user_id']) {
// If the Id is the same update it to ''
$sql_update = "UPDATE tasks SET task_user='' WHERE task_id='".$tasks[$i]."'";
if (mysqli_query($con, $sql_update)) {
// If that worked then add this to the list of addjusted IDs
// First check if the variable is empty or not
if($data['adjusted'] == '') {
// Add the ID plainly
$data['adjusted'] = $tasks[$i];
} else {
// Otherwise preceed the ID with an &
$data['adjusted'] = $data['adjusted'].'&'.$tasks[$i];
};
} else {
// Return an error
echo json_encode(array(
'status'=>'unsuccesful',
'where'=>3
));
// Exit the php before it returns an succes state
exit();
};
};
// Now reset task_user
$data['task_user'] = '';
} else {
// Return an error
echo json_encode(array(
'status'=>'unsuccesful',
'where'=>2
));
// Exit the php before it returns an succes state
exit();
};
};
} else {
// Return an error
echo json_encode(array(
'status'=>'unsuccesful',
'where'=>1
));
// Exit the php before it returns an succes state
exit();
};
};
$tasklists=分解（'&'，$data['proj_tasklists']）；
//现在让我们获取每个任务列表的所有任务
对于（$i=0；$i