CodePrimer
Search a living directory of web syntax. Pick a problem, copy a working sample, then adapt it.
PHP
Beginner
while loop
How do I loop while a condition is true?
PHP
Beginner
do...while loop
How do I run a loop at least once?
PHP
Beginner
for loop
How do I loop with a counter?
PHP
Beginner
foreach over arrays
How do I loop an array in PHP?
PHP
Beginner
Declare a PHP function
How do I write a reusable function?
PHP
Beginner
Default function arguments
How do I make a parameter optional?
PHP
Beginner
Indexed arrays
How do I store a list in PHP?
PHP
Beginner
Associative arrays
How do I store key/value pairs?
PHP
Intermediate
Multidimensional arrays
How do I store rows of data?
PHP
Beginner
Essential array functions
How do I count, push, pop, and sort arrays?
PHP
Beginner
Read $_GET values
How do I read query string data?
PHP
Beginner
Read $_POST values
How do I read POST body fields?
PHP
Intermediate
Sanitize and validate input
How do I protect against XSS and bad emails?
PHP
Beginner
Read checkbox array in PHP
How do I read skills[] from a form?
PHP
Intermediate
PDO connection for Laragon MySQL
How do I connect PHP to Laragon MySQL?
PHP
Intermediate
PDO ERRMODE_EXCEPTION
Why set PDO error mode to exceptions?
PHP
Intermediate
PDO prepared INSERT
How do I insert a row safely?
PHP
Intermediate
PDO prepared UPDATE
How do I update a record with PDO?