Loop through an array php
Using foreach loop without key Using foreach loop with key Using for loop var_dump is a really useful function to get a snapshot of an array or object.
php
How to fix “Headers already sent” error in PHP
No output before sending headers! Functions that send/modify HTTP headers must be invoked before any output is made. summary ⇊ Otherwise the call fails: Warning: Cannot modify header information – headers already sent (output started at script:line) Some functions modifying the HTTP header are: header / header_remove session_start / session_regenerate_id setcookie / setrawcookie Output can be: Unintentional: Whitespace before <?php or after ?> The UTF-8 Byte Order Mark specifically Previous … Read more
Fatal error: Call to undefined function mysql_connect()
I have set up PHP, MySQL, and Apache. localhost() for PHP and it is working well. But after I downloaded MySQL, it reports: Fatal error: Call to undefined function mysql_connect() How can I fix this?
How do I convert a string to a number in PHP?
You don’t typically need to do this, since PHP will coerce the type for you in most circumstances. For situations where you do want to explicitly convert the type, cast it:
PHP “php://input” vs $_POST
The reason is that php://input returns all the raw data after the HTTP-headers of the request, regardless of the content type. The PHP superglobal $_POST, only is supposed to wrap data that is either application/x-www-form-urlencoded (standard content type for simple form-posts) or multipart/form-data (mostly used for file uploads) This is because these are the only content types that must be supported by user agents. … Read more
PHP “or” Syntax
It’s a logical operator and can be used in any logical expression. http://php.net/manual/en/language.operators.logical.php
Whoops, looks like something went wrong. Laravel 5.0
The logs are located in storage directory. If you want laravel to display the error for you rather than the cryptic ‘Whoops’ message, copy the .env.example to .env and make sure APP_ENV=local is in there. It should then show you the detailed error messaging.
Where can I find php.ini?
The best way to find this is: Create a PHP (.php) file and add the following code: and open it in a browser. It will show the file which is actually being read! Updates by the OP: The previously accepted answer is likely to be faster and more convenient for you, but it is not always correct. … Read more
How to fix ‘Notice: Undefined index:’ in PHP form action
Assuming you only copy/pasted the relevant code and your form includes <form method=”POST”> If _POST is not set the filename variable won’t be either in the above example. An alternative way: In this example filename is set regardless of the situation with _POST. This should demonstrate the use of isset nicely. More information here: http://php.net/manual/en/function.isset.php
PHP 7.2 – Warning: count(): Parameter must be an array or an object that implements Countable
PDO fetch returns false on failure. So you need to check this case too: