PHP Math Function Series Summary _php tutorial

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The Asinh () function returns the inverse hyperbolic sine of a number.

The ASIN () function returns the inverse of a different value, and the result is a radian value between-PI/2 and PI/2.

The Acosh () function returns the inverse hyperbolic cosine of a number.

The ACOs () function returns the inverse cosine of a number.

The ABS () function returns the absolute value of a number.

The mail () function allows you to send e-mail directly from a script.

The Libxml_use_internal_errors () function disables standard libxml errors and enables user error handling.

The Libxml_get_last_error () function gets the last error from the libxml error buffer.

The Libxml_get_errors () function gets an error from the libxml error buffer.

The Libxml_clear_errors () function empties the libxml error buffer.

The Setrawcookie () function does not URL-encode the cookie value and sends an HTTP cookie.

The Setcookie () function sends an HTTP cookie to the client.

The Headers_sent () function checks to see if the HTTP header is sent/sent to.

The Headers_list () function returns a list of sent (or pending) response headers.

The header () function sends the original HTTP header to the client.

The Ftp_systype () function returns the system type identifier of the remote FTP server.

The Ftp_ssl_connect () function opens a secure ssl-ftp connection.

The Ftp_size () function returns the size of the specified file.

The Ftp_site () function sends the site command to the server.

The Ftp_set_option () function sets various FTP run-time options.

The Ftp_rmdir () function deletes a directory.

The Ftp_rename () function changes the file or directory name on the FTP server.

The Ftp_rawlist () function returns a detailed list of the files in the specified directory.

The Ftp_raw () function sends a raw command to the FTP server.

The Ftp_quit () function closes the FTP connection.

The FTP_PWD () function returns the current directory name.

The Ftp_put () function uploads the file to the server.

The FTP_PASV () function sets the passive mode to on or off.

The Ftp_nlist () function returns a list of files for the specified directory.

The Ftp_nb_put () function uploads the file to the server (non-blocking).

The Ftp_nb_get () function obtains the file from the FTP server and writes to the local file (non-blocking).

The Ftp_nb_fput () function uploads an open file and saves it as a file (non-blocking) on the FTP server.

The Ftp_nb_fget () function downloads a file from the FTP server and saves it to a file that is already open locally (non-blocking).

The Ftp_nb_continue () function gets/sends the file continuously.

The Ftp_mkdir () function creates a new directory on the FTP server.

The Ftp_mdtm () function returns the last modified time of the specified file.

The Ftp_login () function logs on to the FTP server.

The Ftp_get () function downloads a file from the FTP server.

The Ftp_get_option () function returns the various options settings for the current FTP connection.

The Ftp_fput () function uploads an already opened file to the FTP server.

The Ftp_fget () function downloads a file from the FTP server and saves it to a local file that is already open.

The Ftp_exec () function requests that a program or command be executed on the FTP server.

The Ftp_delete () function deletes a file on the FTP server.

The Ftp_connect () function establishes a new FTP connection.

The Ftp_close () function closes the FTP connection.

The Ftp_chmod () function sets permissions on the specified file on the FTP server.

The Ftp_chdir () function changes the current directory on the FTP server.

The Ftp_cdup () function changes the current directory to the parent directory on the FTP server.

The Ftp_alloc () function allocates space for files to be uploaded to the FTP server.

The Filter_var () function filters variables by the specified filter.

The Filter_var_array () function gets the multiple variables and filters them.

The Filter_list () function returns an array that contains all the supported filters.

The Filter_input_array () function obtains multiple inputs from outside the script and filters them.

The Filter_input () function takes input from outside the script and filters it.

The filter_id () function returns the ID number of the specified filter.

The Filter_has_var () function checks for the existence of a variable of the specified input type.

The unlink () function deletes the file.

The Umask () function changes the current umask.

The touch () function sets the access and modification times for the specified file.

The Tmpfile () function establishes a temporary file with a unique file name in read-write (w+) mode.

The Tempnam () function creates a temporary file with a unique file name.

The Symlink () function creates a symbolic connection.

The stat () function returns information about the file.

The Set_file_buffer () function sets the buffer size of the open file.

The RmDir () function removes the empty directory.

The rewind () function returns the position of the file pointer back to the beginning of the file.

The rename () function renames the file or directory.

The Realpath () function returns an absolute path.

The Readlink () function returns the target to which the symbolic connection is directed.

The ReadFile () function outputs a file.

The Popen () function opens the process file pointer.

The Pclose () function closes the pipe opened by Popen ().

The PathInfo () function returns information about the file path in the form of an array.

The Parse_ini_file () function parses a configuration file and returns the settings in the form of an array.

The Move_uploaded_file () function moves the uploaded file to a new location.

The mkdir () function creates a directory.

The Lstat () function returns information about a file or symbolic connection.

The LinkInfo () function returns information about the connection.

The link () function establishes a hard connection.

The is_writeable () function determines whether the specified file is writable.

The is_writable () function determines whether the specified file is writable.

The Is_uploaded_file () function determines whether the specified file was uploaded via HTTP POST.

The is_readable () function determines whether the specified file name is readable.

The Is_link () function determines whether the specified file name is a symbolic connection.

The Is_file () function checks whether the specified file name is normal.

The is_executable () function checks whether the specified file can be executed.

The Is_dir () function checks whether the specified file is a directory.

The Glob () function returns the file name or directory that matches the specified pattern.

The fwrite () function writes to the file (which is safe for binary files).

The Ftruncate () function truncates the file to the specified length.

The Ftell () function is in the current position in the open file.

The Fstat () function returns information about the open file.

The fseek () function is positioned in the open file.

The fscanf () function parses input from an open file according to the specified format.

The Fread () function reads the file (which can be used safely in binary files).

The fputs () function writes to the file (which is safe for binary files).

The Fputcsv () function formats the row as CSV and writes an open file.

The Fpassthru () function outputs all the remaining data at the file pointer.

The fopen () function opens the file or URL.

The Fnmatch () function matches the file name or string according to the specified pattern.

The flock () function locks or releases files.

The filetype () function returns the type of the specified file or directory.

The FileSize () function returns the size of the specified file.

The Fileperms () function returns permissions for a file or directory.

The Fileowner () function returns the owner of the file.

The Filemtime () function returns the last modified time of the file's contents.

The Fileinode () function returns the inode number of the file.

The filegroup () function returns the group ID of the specified file.

The Filectime () function returns the last Inode modification time for the specified file.

The Fileatime () function returns the last access time for the specified file.

The file_put_contents () function writes a string to the file.

The file_get_contents () function reads the entire file into a string.

The file_exists () function checks whether a file or directory exists.

The file () function reads entire files into an array.

The FGETSS () function reads a row from an open file and filters out HTML and PHP tags.

The fgets () function reads a row from the file pointer.

The Fgetcsv () function reads a row from the file pointer and resolves the CSV field.

The FGETC () function reads a character from the file pointer.

The Fflush () function outputs the buffered content to a file.

The feof () function detects if the end of file (EOF) has been reached.

The fclose () function closes an open file.

The Diskfreespace () function returns the free space in the directory. The function is an alias of the Disk_free_space () function.

The Disk_total_space () function returns the total disk size of the specified directory.

The Disk_free_space () function returns the free space in the directory

The DirName () function returns the directory portion of the path.

The Clearstatcache () function copies the file.

The Clearstatcache () function clears the file state cache.

The Chown () function changes the owner of the specified file.

The chmod () function changes the file mode.

The CHGRP () function changes the group to which the file belongs.

The basename () function returns the file name portion of the path.

Set_exception_handler () handler () function

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