important program of PHP
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Here this is the program for username validation in PHP. If user entered name which is already exists then it will display error message. Here is the code for that program. …
1. ARRAY_SEARCH array_search — Searches the array for a given value and returns the corresponding key if successful Description mixed array_search ( mixed $needle, array …
ARRAY_KEY_EXISTS array_key_exists — Checks if the given key or index exists in the array Description bool array_key_exists ( mixed $key, array $search ) array_key_exists() …
ARRAY_KEYS array_keys — Return all the keys of an array Description array array_keys ( array $input [, mixed $search_value [, bool $strict]] ) array_keys() returns the key…
ARRAY_COUNT_VALUES array_count_values — Counts all the values of an array Description array array_count_values ( array $input ) array_count_values() returns an array using …