Php function notes

String function: htmlspecialchars () md5 () number_format () preg_match () trim () printf () str_replace () strip_tags () explode () implode () handle array function:

String functions:
Htmlspecialchars ()
Md5 ()
Number_format ()
Preg_match ()
Trim ()
Printf ()
Str_replace ()
Strip_tags ()
Explode ()
Implode ()
Sprintf
Strpos
Strrchr
Strrpos
Strstr
Substr

Array processing functions:
Array_filter ()
Array_intersect ()
Array_merge ()
Array_pop ()
Array_push ()
Array_rand ()
Array_shift ()
Array_sum ()
In_array ()
Range ()
Shuffle ()
Unique ()

Date and time functions:
Date ()
Getdate ()
Microtime ()
Mktime ()

File system functions:
Basename ()
Dirname ()
File_get_contents ()
Filetype ()
File ()
Fopen ()
Pathinfo ()
Readfile ()

Session control functions
SetCookie ()
Session_destroy ()
Session_start ()

Database mysqli module functions:
Mysqli_connect_errno ()
Mysqli_fetch_accoc ()
Mysqli_fetch_array ()
Mysqli_fetch_object ()
Mysqli_fetch_row ()
Mysqli_query ()
Mysqli ()