key_exists end count compact array_values array_unshift array_shift array_unique array_uintersect array_sum array_splice array_slice array_search array_reverse array_replace array_replace_recursive array_reduce array_rand array_product array_pop array_pad array_merge array_map array_keys array_dift Hàm array() trong PHP Hàm array_chunk() trong PHP Hàm array_change_key_case() trong PHP Hàm in_array() trong PHP Hàm array_column() trong PHP Hàm array_combine() trong PHP Hàm array_count_values() trong PHP Hàm array_diff_assoc() trong PHP Hàm array_push() trong PHP Hàm array_diff_key() trong PHP Hàm array_diff_uassoc() trong PHP Hàm explode() trong PHP hàm usort sort uksort uasort shuffle reset range next prev pos natsort natcasesort ksort krsort key

Hàm md5() trong PHP Hàm sha1() trong PHP Hàm md5_file() trong PHP hash_algos hash hash_init hash_update hash_final hash_copy hash_file hash_equals

Hàm strtoupper() trong PHP Hàm lcfirst() trong PHP Hàm bin2hex() trong PHP Hàm addslashes() trong PHP Hàm trop() trong PHP Hàm chr() trong PHP Hàm chunk_split() trong PHP str_replace Hàm convert_uuencode() trong PHP Hàm convert_uudecode() trong PHP Hàm crc32() trong PHP boolval empty floatval get_defined_vars echo explode get_html_translation_table hex2bin html_entity_decode htmlentities implode join lcfirst ltrim md5 nl2br number_format ord print rtrim similar_text str_ireplace str_pad str_repeat str_shuffle str_split str_word_count strcasecmp strchr strstr strcmp strip_tags stripcslashes stripos stripslashes stristr strlen strnatcasecmp strnatcmp strncmp strpbrk strpos strrchr strrev strripos strrpos strspn strtok strtolower strtoupper strtr substr_compare substr_count substr_replace substr trim ucfirst ucwords wordwrap

Hàm intval() trong PHP gettype is_array is_bool is_callable is_float is_double is_int is_integer is_null is_numeric is_object is_real is_resource is_scalar is_string isset print_r serialize unserialize settype strval unset var_dump var_export

Hàm Remove all file in folder trong PHP

checkdate date_add date_create_from_format date_create date_date_set date_default_timezone_get date_default_timezone_set date_diff date_format date_get_last_errors date_interval_create_from_date_string date_interval_format date_isodate_set date_modify date_offset_get date_parse_from_format date_parse date_sub date_sun_info date_time_set date_timestamp_get date_timestamp_set date_timezone_get date_timezone_set date getdate gettimeofday gmdate gmmktime idate localtime microtime mktime strftime strtotime time timezone_abbreviations_list timezone_location_get timezone_name_get timezone_offset_get timezone_open

basename chgrp chmod chown clearstatcache copy unlink dirname disk_free_space disk_total_space diskfreespace fclose feof fgetc fgets fgetss file_exists file_get_contents file_put_contents file fileatime filectime filegroup fileinode filemtime fileowner fileperms filesize filetype fopen fpassthru fwrite fputs fread fseek fstat ftell ftruncate glob is_dir is_executable is_file is_link is_readable is_uploaded_file is_writable link lstat mkdir move_uploaded_file parse_ini_file parse_ini_string pathinfo readfile readlink realpath_cache_get realpath_cache_size realpath rename rewind rmdir symlink tempnam tmpfile touch

mysqli_fetch_row mysqli_field_count mysqli_field_seek mysqli_field_tell mysqli_free_result mysqli_get_charset mysqli_get_client_stats mysqli_get_client_version mysqli_get_connection_stats mysqli_get_host_info mysqli_get_proto_info mysqli_get_server_info mysqli_get_server_version mysqli_info mysqli_init mysqli_multi_query mysqli_next_result mysqli_num_fields mysqli_num_rows mysqli_options mysqli_ping mysqli_query mysqli_real_connect mysqli_refresh mysqli_select_db mysqli_set_charset mysqli_stat mysql_affected_rows mysqli_connect mysql_close mysql_connect mysqli_affected_rows mysqli_change_user mysqli_connect_errno mysqli_connect_error mysqli_errno mysqli_error_list mysqli_error mysqli_fetch_all mysqli_fetch_arrray mysqli_fetch_assoc mysqli_fetch_field mysqli_fetch_fields mysqli_fetch_lengths mysqli_fetch_object

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