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appending array to FormData and send via AJAX

... You have several options: Convert it to a JSON string, then parse it in PHP (recommended) JS var json_arr = JSON.stringify(arr); PHP $arr = json_decode($_POST['arr']); Or use @Curios's method Sending an array via FormData. Not recommended: Serialize the data with, then deserialize in PHP JS /...
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App Inventor 2开发简单计算器 - App Inventor 2 中文网 - 清泛IT论坛,有思想、有深度

...序执行过程、跟踪变量值的方法,可以帮我们找到原因。问题出在输入等号之后,此时: 前数=计算结果 后数=0 算符=“”接下来输入算符,由于算符=“”,因此执行点击算符过程的“如果...则”分支,第一行代码为【前数=后数...
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Can linux cat command be used for writing text to file?

...text file: cat > output.txt <<EOF some text some lines EOF For PHP file: cat > test.php <<PHP <?php echo "Test"; echo \$var; ?> PHP share | improve this answer ...
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how to bypass Access-Control-Allow-Origin?

...ase). My ajax script is working , it can send the data over to my server's php script to allow it to process. However it cannot get the processed data back as it is blocked by "Access-Control-Allow-Origin" ...
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How do I check if a directory exists? “is_dir”, “file_exists” or both?

...hink realpath() may be the best way to validate if a path exist http://www.php.net/realpath Here is an example function: <?php /** * Checks if a folder exist and return canonicalized absolute pathname (long version) * @param string $folder the path being checked. * @return mixed returns the ...
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How to escape single quotes in MySQL

...re using to talk to MySQL will have an escaping function built in, e.g. in PHP you could use mysqli_real_escape_string or PDO::quote share | improve this answer | follow ...
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Single Sign On across multiple domains [closed]

... There is a master domain, login.mydomain.com with the script master_login.php that manages the logins. Each client domain has the script client_login.php All the domains have a shared user session database. When the client domain requires the user to be logged in, it redirects to the master domain ...
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.htaccess: Invalid command 'RewriteEngine', perhaps misspelled or defined by a module not included i

I have this error when trying to browse php files locally 8 Answers 8 ...
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Force LF eol in git repo and working copy

...pository with the following lines (change as desired): # Ensure all C and PHP files use LF. *.c eol=lf *.php eol=lf which ensures that all files that Git considers to be text files have normalized (LF) line endings in the repository (normally core.eol configuration controls which on...
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How do you create optional arguments in php?

In the PHP manual, to show the syntax for functions with optional parameters, they use brackets around each set of dependent optional parameter. For example, for the date() function, the manual reads: ...