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PHP Overview PHP Array array() array_change_key_case() array_chunk() array_column() array_combine() array_count_values() array_diff() array_diff_assoc() array_diff_key() array_diff_uassoc() array_diff_ukey() array_fill() array_fill_keys() array_filter() array_flip() array_intersect() array_intersect_assoc() array_intersect_key() array_intersect_uassoc() array_intersect_ukey() array_key_exists() array_keys() array_map() array_merge() array_merge_recursive() array_multisort() array_pad() array_pop() array_product() array_push() array_rand() array_reduce() array_replace() array_replace_recursive() array_reverse() array_search() array_shift() array_slice() array_splice() array_sum() array_udiff() array_udiff_assoc() array_udiff_uassoc() array_uintersect() array_uintersect_assoc() array_uintersect_uassoc() array_unique() array_unshift() array_values() array_walk() array_walk_recursive() arsort() asort() compact() count() current() each() end() extract() in_array() key() krsort() ksort() 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PHP Variable Handling boolval() debug_zval_dump() doubleval() is_countable() empty() floatval() get_defined_vars() get_resource_type() gettype() intval() is_array() is_bool() is_callable() is_double() is_float() is_int() is_integer() is_iterable() is_long() is_null() is_numeric() is_object() is_real() is_resource() is_scalar() is_string() isset() print_r() serialize() settype() strval() unserialize() unset() var_dump() var_export() PHP XML Parser utf8_decode() utf8_encode() xml_error_string() xml_get_current_byte_index() xml_get_current_column_number() xml_get_current_line_number() xml_get_error_code() xml_parse() xml_parse_into_struct() xml_parser_create_ns() xml_parser_create() xml_parser_free() xml_parser_get_option() xml_parser_set_option() xml_set_character_data_handler() xml_set_default_handler() xml_set_element_handler() xml_set_end_namespace_decl_handler() xml_set_external_entity_ref_handler() xml_set_notation_decl_handler() xml_set_object() xml_set_processing_instruction_handler() xml_set_start_namespace_decl_handler() xml_set_unparsed_entity_decl_handler() PHP Zip zip_close() zip_entry_close() zip_entry_compressedsize() zip_entry_compressionmethod() zip_entry_filesize() zip_entry_name() zip_entry_open() zip_entry_read() zip_open() zip_read() PHP Timezones PHP Associative Arrays ❮ Previous Next ❯

PHP Associative Arrays

Associative arrays use named keys, instead of numeric indices.

Example

$car = array("brand"=>"Ford", "model"=>"Mustang", "year"=>1964); var_dump($car); Try it Yourself »

Access Array Item

To access a specific array item, refer to the key name.

Example

Display the model of the car:

$car = array("brand"=>"Ford", "model"=>"Mustang", "year"=>1964); echo $car["model"]; Try it Yourself »

Change Value of Array Item

To change the value of an array item, use the key name:

Example

Change the year item:

$car = array("brand"=>"Ford", "model"=>"Mustang", "year"=>1964); $car["year"] = 2024; var_dump($car); Try it Yourself »

Loop Through an Associative Array

To loop through and print all the values of an associative array, use a foreach loop, like this:

Example

Display all array items, keys and values:

$car = array("brand"=>"Ford", "model"=>"Mustang", "year"=>1964); foreach ($car as $x => $y) { echo "$x: $y <br>"; } Try it Yourself »

For a complete reference of all array functions, go to our complete PHP Array Reference.

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