PHP Basic Tutorial
MySQL Connection
PHP offers a rich set of built-in functions to work with arrays. Here are some of the commonly used array functions in PHP:
|
FUNCTION |
DESCRIPTION |
|---|---|
|
array() |
Creates an array |
|
array_push($array, $value) |
Adds one or more elements to the end of an array |
|
array_pop($array) |
Removes and returns the last element of an array |
|
array_unshift($array, $value) |
Adds one or more elements to the beginning of an array |
|
array_shift($array) |
Removes and returns the first element of an array |
|
array_key_exists($key, $array) |
Checks if a specified key exists in the array |
|
array_keys($array) |
Returns all the keys of an array |
|
array_values($array) |
Returns all the values of an array. |
|
array_filter($array, $callback) |
Filters elements of an array using a callback function |
|
array_map($callback, $array) |
Applies a callback function to each element of an array. |
|
array_reduce($array, $callback) |
Reduces an array to a single value using a callback function |
|
in_array($needle, $array) |
Checks if a value exists in an array |
|
array_search($needle, $array) |
Searches the array for a value and returns its key if found |
|
Sorts an array in ascending order |
|
|
Sorts an array in descending order |
|
|
Sorts an array by key in ascending order |
|
|
Sorts an array by key in descending order |
|
|
array_chunk($array, $size) |
Splits an array into chunks of specified size |
|
array_merge($array1, $array2) |
Merges two or more arrays |
|
array_combine($keys, $values) |
Creates an array by using one array for keys and another for values |
|
array_slice($array, $offset, $length) |
Extracts a portion of an array |
|
array_splice($array, $offset, $length, $replacement) |
Removes a portion of an array and replaces it |
|
count($array) |
Counts the number of elements in an array |
|
array_reverse($array) |
Returns an array with elements in reverse order |
|
array_unique($array) |
Removes duplicate values from an array |