Checking if a file exists
if (file_exists($some_file)){
...
}
Basic Error Handling
function($var) or exit("some error");
Printing an array
print_r();
Creating a class
class SomeClass{
private some_var;
public function SomeClass(){}
public function new_fun($r){
print_r($r);
echo $this->some_var;
}
}
Defining an array
$my_array = array('elem1','elem2');
Adding an array element
array_push($array,$elem)
Checking if a key exists
array_key_exists("some_name",$r)
Using a global var in a function
global $global_var;
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