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How to resolve “must be an instance of string, string given” prior to PHP 7?

... Prior to PHP 7 type hinting can only be used to force the types of objects and arrays. Scalar types are not type-hintable. In this case an object of the class string is expected, but you're giving it a (scalar) string. The error messa...
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What's the use of ob_start() in php?

...ean() since ob_get_clean() essentially performs both functions. Reference: php.net/manual/en/function.ob-get-clean.php (PHP 4 >= 4.3.0, PHP 5) – Con Antonakos May 20 '15 at 16:49 ...
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PHP: exceptions vs errors?

Maybe I'm missing it somewhere in the PHP manual, but what exactly is the difference between an error and an exception? The only difference that I can see is that errors and exceptions are handled differently. But what causes an exception and what causes an error? ...
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How to read if a checkbox is checked in PHP?

How to read if a checkbox is checked in PHP? 18 Answers 18 ...
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How to enable cURL in PHP / XAMPP

How do I enable cURL in PHP? 18 Answers 18 ...
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Using $_POST to get select option value from HTML

... Where do I put the $selectOption = $_POST['taskOption']; I put it in the php but it does nothing.... – Yunfei Chen 2 days ago add a comment  |  ...
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Calling closure assigned to object property directly

... As of PHP7, you can do $obj = new StdClass; $obj->fn = function($arg) { return "Hello $arg"; }; echo ($obj->fn)('World'); or use Closure::call(), though that doesn't work on a StdClass. Before PHP7, you'd have to implem...
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Cross-Origin Request Headers(CORS) with PHP headers

I have a simple PHP script that I am attempting a cross-domain CORS request: 11 Answers ...
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TaifunWiFi 拓展:WiFi Manager WiFi管理器扩展 · App Inventor 2 中文网

...I(Android >= 10) 最佳实践 故障排除 常见问题 开发信息 « 返回扩展首页 TaifunWiFi 拓展:WiFi Manager WiFi管理器扩展 在无线局域网中使用的功能块。 .aix 拓展下载: com.puravidaapps.Taifu...
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How to get a variable name as a string in PHP?

Say i have this PHP code: 24 Answers 24 ...