Skip to main content

How to view and debug PHP arrays


Sometimes when coding or debugging in PHP, it’s helpful to see the entire contents of an array. An easy way to do this is with the print_r command. To make it more readable, wrap it in <pre> tags.
For example, to see the contents of associative array $result:
<pre><?= print_r($result) ?></pre>

You’ll see output like this:

Array
(
    [key1] => value1
    [key2] => value2
    [key3] => value3
)

1


Labels:

Comments

Post a Comment

Popular posts from this blog

Reading and Generating QR codes in Python using QRtools

What are QR codes? A Quick Response (QR) code is a 2 dimensional barcode that is used due to its fast readability and relatively large storage capacity.  2 dimensional barcodes are similar to one dimensional barcodes, but can store more information per unit area. Installation and Dependencies Linux:   qrtools can be installed on debian based linux systems with the following commands $sudo apt-get update $sudo apt-get install python-qrtools The following dependencies must be installed as well [sudo] pip install pypng [sudo] pip install zbar [sudo] pip install pillow Windows:   qrtools can be installed on windows by downloading the file from here(https://pypi.python.org/pypi/qrtools/0.0.1). On downloading and extraction, run the following command from inside the folder python setup.py install Generating a qrCode: qrtools contains a class QR (can be viewed in the source code), for which we must initially create an object. The object takes the ...
Post a Comment
Read more

Convert JSON to ARRAY in PHP

 To convert an Array to JSON in PHP, we use json_encode() function. The function is used to encode a value to JSON format $arr = array ( 'Millie' => 'Eleven' ,             'Mike' => 'Finn' ,             'Gaten' => 'Dustin' ,             'Noah' => 'Will' ); echo json_encode ( $arr ). " \n " ; Output : { "Millie" : "Eleven" , "Mike" : "Finn" , "Gaten" : "Dustin" , "Noah" : "Will" }
Post a Comment
Read more

MYSQL CONNECTION USING PDO WITH PHP

Hello guys, In the previous tutorial we have seen how to connect to MySQL database with PHP using MySQLi. Today we will learn how to connect with PDO. As a PHP programmer we have learned how to access database by using either MySQL and MySQLi. As of PHP 5.1, there's a better way. PHP Data Objects(PDO) provide methods for prepared statements and working with objects that will make you far more productive! PDO Introduction :        PDO provides a data-access abstraction layer, which means that, regardless of which database you're using, you use the same functions to issue queries and fetch data. PDO does not provide a database abstraction; it doesn't rewrite SQL or emulate missing features. Database Support:       The extension can support any database that a PDO driver has been written for. The following drivers currently implement the PDO interface: PDO_CUBRID Cubrid PDO_DBLIB FreeTDS / Microsoft SQL Server / Sybase PDO_FIREBIRD Firebird PDO_I...
4 comments
Read more