How to check if a file exists from a URL with PHP
How to check if a file exists on a remote server or network from a URL with PHP. Using file_exists() only works for directory links (files on the system) and…
Tag: Web Dev
How to build an array with Javascript
Building an array in Javascript and filling a text area with the array and clearing it on button click. CodePen example. To build an array in Javascript you need to…
jQuery select closest text and input values example
Using jQuery to select text and input values based on closest parameters. CodePen example. closest() will get the first element matching by traversing up, whilst find() will descend until the…
Generating and creating an XML file from MySQL with PHP
Generating an XML file with data from a MySQL database using the inbuilt SimpleXMLElement class. By using this class you can avoid formatting errors and issues than if you were…
How to POST JSON data with PHP
How to POST JSON data or a file in PHP including receiving the POST request and saving it to a file. This is done with the easy to use PHP…
How to validate a date with PHP
A simple method to validate a date or check the date is true to the Gregorian calendar in PHP by defining the month, day and year. PHP checkdate() will return…
The Relational database model
The Relational database model or schema is one that uses many tables that are all related to each other, hence the relational name tag. With the data all being related…
Load and execute SQL files with PHP
How to load a SQL query from a file instead of having an inline query. This is done to help with formatting and easier understanding of the code. All that…
Doing MySQL insert from a PHP loop the right way
Effectively manage PHP MySQL inserts from a large loop using the PDO connection. The key is to avoid committing data on each loop, this is done using a transaction. Use…
PHP isset() vs empty() vs is_null() comparison
A PHP isset, empty, and is null helper function comparison with a table for variables and common types. Quick rundown isset() returns true when the variable has a value, is…