php blank $_GET[] detection
6230
Get URL query string parameters
76864
What is the best way to check if a URL exists in PHP?
77400
PHP/MySQL/PDO binding null parameter doesn't work
36557
Loading JSON in PHP53: ZVAL_DELREF in Unknown on line 0
61409
How can I check if a URL exists via PHP?
58312
Why does (0 == 'Hello') return true in PHP?
139679
How can I check if an array contains a specific value in php?
255
How can I prevent SQL injection in PHP?
60839
PHP 5.4: disable warning "Creating default object from empty value"
86214
if(!isset($_POST["user"]) ignored and returns Undefined Index
51812
How to add elements to an empty array in PHP?
107806
How to get pretty HTML source code from PHP generated output?
80984
How do I check if an HTML element is empty using jQuery?
120580
What does "=>" mean in PHP?
2111
Get PHP to stop replacing '.' characters in $_GET or $_POST arrays?
40357
How do I catch a PHP fatal (`E_ERROR`) error?
81852
PHP output showing little black diamonds with a question mark