[PHP]PHP function

String STRING

---

>> Statistics

strlen(string) - Length

strcmp(string1,string2) - Compare strings

>> Find

str pos( string,find,start) - Search in another string, return the first position

stripos(string,find,start) - (Case insensitive)

strrpos(string,find,start) - (last Once)

strripos(string,find,start) - (Case insensitive)(Last time)

strstr(string,search) - Match in another string, return the first matching value and the remaining part

stristr(string,search) - (case insensitive)

str_replace(find,replace,string,count) - replace

str_ireplace(find,replace,string,count) - (case insensitive)

substr(string,start,length) - intercept

>> Convert

explode(separator,string,limit) - string-> array

implode(separator, array) - array-> character String

join(separator,array) - Same as above

str_split(string,length) - Split the string into an array

parse_str(string,array) - Parse the Query string into an array

strtolower(string) - Lowercase

strtoupper(string) - uppercase

str_shuffle(string) - randomly shuffle

strrev(string) - reverse

>> output

echo(string)

print(string)

printf(format,arg1,arg2,arg++) - Formatted output

fprintf(stream,format,arg1,arg2,arg++) - Formatted output to file

sprintf(format,arg1,arg2,arg++) - Formatted To string

>> format

str_pad(string,length,pad_string,pad_type) - pad to specified length

str_repeat(string,repeat) - repeat specified number of times

chunk_split(string,length,end ) - Insert separator

number_format(number,decimals,decimalpoint,separator) - Format numbers

trim(string,charlist) - Clean both ends

strip_tags(string,allow) - Strip HTML, XML, PHP tags

>> Escape

addslashes(string) - Add backslashes before predefined characters

stripslashes(string)

addcslashes(string,characters) - Add backslashes before custom characters

Stripcslashes(string)

htmlentities(string,quotestyle,character-set) - All characters-> HTML entities

html_entity_decode(string,quotestyle,character-set) - HTML entities-> Characters

htmlspecialchars(string ,quotestyle,character-set) - Partial characters ( & | " | ' | ) -> HTML entity

htmlspecialchars_decode(string,quotestyle) - HTML entity -> Character

nl2br(string) - /n -> ,raw) - Lossy digest of the file

sha1(string,raw) - SHA1 hash

sha1_file(file,raw)

>> ASCII

ord(string) - Returns the ASCII of the first character

Array ARRAY

>> New & Assignment

list(var1,var2,val3...) = $array - assign values ​​to variables using array elements

range(min,max,step) - create Specified range of arrays

array_combine(array1, array2) - Create a new array: array1 is the key, array2 is the value

---

>> Stack

array_pop(array) - Tail pop

array_push(array, value1, value2. ..) - Push the tail onto the stack, equivalent to $array[] = $value

array_shift(array) - Pop the first part off the stack

array_unshift(array,value1,value2,value3...) - Push the first part onto the stack

> > Statistics

array_sum(array) - the sum of all elements

array_product(array) - the product of all elements

count(array, mode) - counts the number of elements, the same as sizeof(array, mode)

array_count_values( array) - Count the number of occurrences of elements

array_keys(array, value, strict) - Return the corresponding key

array_values(array) - Return all values

array_search(value, array, strict) - Search for value and return the key

in_array(value,array,type) - Check if value exists

array_key_exists(key,array) - Check if key exists

>> Compare

array_diff(array1,array2,array3...) - Difference set

 array_diff_assoc(array1,array2,array3...)

array_diff_key(array1,array2,array3...)

array_intersect(array1,array2,array3...) - Intersection

array_intersect_assoc(array1,array2,array3...)

array_intersect_key(array1,arra y2,array3. ..)

>>Sort

sort(array,sorttype) - sort by value in ascending order (rebuild index)

rsort(array, sorttype) - sort by value in descending order (rebuild index)

asort(array, sorttype) - Forward sorting by value (keep index) arsort(array, sorttype) - Sort reverse by value (keep index)

natsort(array) - Natural sorting

natcasesort(array) - Size-insensitive natural sorting

ksort(array,sorttype) - Forward sorting by key

krsort(array,sorttype) - Reverse sorting by key

array_multisort(array, sorting order, sorting type) - Sorting

shuffle(array) - Randomly sort Random array sorting

array_reverse(array,preserve) - Reverse the order

>> Modify

array_change_key_case(array,case) - Convert case

array_filter(array,function) - Filter with the given method

array_map(function,array1,array2,array3...) - apply method to each element

array_fill(start,number,value) - fill array with given value

array_pad(array,size,value) - put Fill the array to a fixed length

array_flip(array) - exchange key and value

array_unique(array) - remove duplicates

>> merge & split

array_chunk(array,size,preserve_key) - cut

array_rand( array,number) - Randomly return array elements (return key when number=1)

array_slice(array,offset,length,preserve) - Intercept

array_splice(array,offset,length,array) - Replace

array_merge(array1 , array2, array3...) - Merge

array_merge_recursive(array1, array2, array3...) - Recursive merge (when the keys are the same)

>> Pointer

each(array) - Return the current element, and Move the pointer

key(array) - current key

current(array) - current value, same as pos(array)

next(array) - next value

prev(array) - previous value

reset( array) - Move to the beginning

end(array) - Move to the end

Date & Time DATE & TIME

---

checkdate(month,day,year) - Check the validity of the date

date(format,timestamp) - Formatted output time

>> Information

getdate(timestamp) - Get date & time information array

microtime(get_as_float) - Get current time information array

>> Timestamp

time() - Current time timestamp

strtotime(time,now) - Convert string to timestamp

mktime(hour,minute,second,month,day,year,is_dst) - Get timestamp

Directory DIR

---

opendir(path,context) - open the directory, return the handle

readdir(handle) - return the file name

closedir(handle) - close the handle

rewinddir(handle) - reset the handle

dir(directory) - Open the directory and return the object. The object has 3 methods: read(), rewind(), close()

File FILE

---

clearstatcache() - Clear the file cache status

parse_ini_file( file, process_sections) - Parse the ini file and return an array

set_file_buffer(file,buffer) - Set the file output buffer

>> File operation

readfile(filename,include_path,context) - Read the file and output to the buffer

readlink(linkpath)

file(path,include_path,context) - read the file as an array

file_get_contents(path,include_path,context,start,max_length) - read the file into a string

file_put_contents(path,data,mode,context) - write to the file

fopen(filename, mode, include_path,context) - open the file

fgetc(file) - read characters

fgets(file,length) - read One line, or specify the length g FGETCSV (File, Length, SEPAROR, Enclosure) -Chn CSV format, read a line

FPUTS (File, String, LENGTH) -Writing files

FPUTCSV (FILE, FIELDS, Seperator, Encloss) - Write a file in CSV format

fread(file,length) - Read a file

fwrite(file,string,length) - Write a file

fflush(file) - Output the buffer content to a file

ftruncate( file,size) - intercept the file

flock(file,lock,block) - lock the file

ftell(file) - pointer position

fseek(file,offset,whence) - position the pointer

rewind(file) - rewind Set the pointer position

 feof(file) - whether the end of the file is reached

                                                                                                         fstat (()) (     )

>> File status

fstat(file) - file information

 lstat(file) - file/soft link information

fileatime(filename) - last access time

filectime(filename) - on The inode information modification time

filemtime(filename) - the last file content modification time

filegroup(filename) - file user group

fileowner(filename) - file user

fileperms(filename) - file permissions

fileinode( filename) - file inode

filesize(filename) - file size

filetype(filename) - file type

>> path

pathinfo(path,options) - path information

linkinfo(path) - hard link Information

basename(path,suffix) - Get the file name

dirname(path) - Get the directory path

realpath(path) - Get the absolute path

>> Size

disk_total_space(directory) - Get the total space size

disk_free_space(directory) - size of available space

>> Determine

file_exists(path) - whether the file or directory exists

is_dir(path) - directory

is_file(path) - file

is_link(path ) - connection

is_readable(path) - readable

is_writable(path) - writable

is_executable(path) - executable

>> system

mkdir(path,mode,recursive,context)

rmdir(dir,context)

link(target,link)

unlink(filename,context)

copy(source,destination)

rename(oldname,newname,context)

touch (filename, time, atime)

chgrp(filename,group)

chmod(filename,mode)chown(filename,owner)glob(pattern,flags)

>> ; HTTP POST

is_uploaded_file(filename) - Whether the file is uploaded via HTTP POST

move_uploaded_file(filename,newloc) - Move the uploaded file

Errors and exceptions ERROR & EXCEPTION

debug_backtrace() - Generate backtrace associative array

debug_print_backtrace() - Output

error_get_last() - Get the lowest level error

---

error_log(error, type, destination, headers) - Error log

error_reporting(report_level) - Set the error reporting level

>> Trigger error/throw exception

trigger_error(error_message,error_types) - trigger error

throw new Exception() - throw exception

>> Specify handler function

set_error_handler(error_function,error_types) - error handling function

set_exception_handler(exception_function) - Exception handling function

Filter FILTER

filter_has_var(type, variable) - Whether there is this variable

filter_input(input_type, variable, filter, options) - Filter external input

filter_input_array ( input_type, args)

---

filter_var(variable, filter, options) - Filter variable

filter_var_array(array, args)

>> Filter

SANITIZE(filter)

FILTER_SANITIZE_STRING - Remove or encode special characters

FILTER_SANITIZE_ENCODED - Similar to urlendode

FILTER_SANITIZE_SPECIAL_CHARS - Similar to urlendode

FILTER_SANITIZE_MAGIC_QUOTES - Similar to addslashes

FILTER_SANITIZE_URL

FILTER_SANITIZ E_EMAIL

FILTER_SANITIZE_NUMBER_INT

FILTER_SANITIZE_NUMBER_FLOAT

VALIDATE(verification)

FILTER_VALIDATE_BOOLEAN

FILTER_VALIDATE_INT

FILTER_VALIDATE_FLOAT

FILTER_VALIDATE_URL

FILTER_VALIDATE_EMAIL

FILTER_VALIDATE_IP

FILTER_VALIDATE_REGEXP

FILTER_CALLBACK - Call custom function

File transfer FTP

>> connection

ftp_connect(host,port,timeout) - Establish a connection

ftp_ssl_connect(host,port ,timeout) - SSL secure connection

---

ftp_login(ftp_connection,username,password) - Log in to FTP

ftp_raw(ftp_connection,command) - Send command

ftp_exec(ftp_connection,command) - Execute command (after logging in) ftp_pas v(ftp_connection,mode) - whether to be passive Mode

ftp_systype(ftp_connection) - Remote machine system

ftp_get_option(ftp_connection,option) - Get parameters

ftp_set_option(ftp_connection,option,value) - Set options

ftp_close(ftp_connection) - Close the connection, same as ftp_quit()

>> Directory

ftp_mkdir(ftp_connection,dir) - Create a directory

ftp_rmdir(ftp_connection,dir) - Delete the directory

ftp_ch dir(ftp_connection,dir ) - Change directory

ftp_cdup(ftp_connection) - Parent directory

ftp_pwd(ftp_connection) - Current path
ftp_nlist(ftp_connection,dir) - Column directory

ftp_rawlist(ftp_connection,dir,recursive) - Directory list details

& gt; > File

ftp_put(ftp_connection,remote,local,mode,resume) - Upload file

ftp_fput(ftp_connection,remote,local,mode,resume) - Upload local open file

ftp_nb_put(ftp_connection,remote,local,mode ,resume) - Asynchronous upload

ftp_nb_fput(ftp_connection,remote,local,mode,resume) - Asynchronous upload of locally opened files

ftp_get(ftp_connection,local,remote,mode,resume) - Download file ftp_fget(ftp_connection, local,remote,mode,resume) - Download to local open file

ftp_nb_get(ftp_connection,local,remote,mode,resume) - Asynchronous download

ftp_nb_fget(ftp_connection,local,remote,mode,resume) - Asynchronous download to local Open file

ftp_delete(ftp_connection,path) - Delete file

ftp_rename(ftp_connection,from,to) - Rename

ftp_chmod(ftp_connection,mode,file) - Change file permissions

ftp_size(ftp_connection,remote_file) - File size

ftp_mdtm(ftp_connection,file) - File last modification time

HTTP

---

header(string,replace,http_response_code) - Send HTTP headers

 headers_list() - Header list array

head ers_sent() - Whether the header has been sent

setcookie(name,value,expire,path,domain,secure) - Set Cookie

Math MATH

---

>> Arithmetic

round() - Rounding

ceil() - Rounding up

floor() - Rounding down

max() - Returning the maximum value

min() - Returning the minimum value

pow(x,y) - x y power

sqrt() - square root

abs() - absolute value

rand(min,max) - return a random integer

>> base

base_convert(number,frombase,tobase) - Arbitrary base conversion

decbin() - Decimal -> Binary

Bindec(binary_string) - Binary -> Decimal

dechex() - Decimal -> Hexadecimal

hexdec() - Ten Hexadecimal-> Decimal

decoct() - Decimal-> Octal

octdec() - Octal-> Decimal

>> Trigonometric function

cos() - Cosine

ac os() - Arccosine

sin() - Sine

asin() - Arcsine

tan() - Tangent

atan() - - Arctangent

MySQL

---

>> Connection

mysql_connect (server, user, pwd, newlink, clientflag) - connection

mysql_pconnect(server, user, pwd, clientflag) - long connection

mysql_close(connection) - close

>> query

mysql_select_db(database ,connection ) - Select the database

mysql_query(sql) - Execute the query, return the resource handle

mysql_fetch_array(data,array_type) - Query, return the array

mysql_fetch_assoc(data) - Return the associative array

mysql_fetch_object(data) - Query, Return Object

mysql_num_rows(data) - Number of result rows

>> Connection status

mysql_ping(connection) - Check the connection, reconnect if disconnected

mysql_thread_id(connection) - Current connection ID

mysql_client_encoding(connection) - Current character set

mysql_list_dbs(connection) - List database

>> Last operation

mysql_info(connection) - Last queried information

mysql_affected_rows(connection) - Number of affected rows

mysql_insert_id(connection) ) - The last inserted ID

mysql_errno(connection) - The last error ID

mysql_error(connection) - The last error message

Input and output I/O

---

>> Print

print_r( value)

var_dump(value) - with type

var_export(value) - returns legal PHP code

Source

[PHP]PHP function

String STRING

---

> ;> Statistics

strlen(string) - Length

strcmp(string1,string2) - Compare strings

>> Find

strpos(string,find,start) - 在另一个字符串中查找, 返回第一次位置

    stripos(string,find,start) - (大小写不敏感)

    strrpos(string,find,start) - (最后一次)

    strripos(string,find,start) - (大小写不敏感)(最后一次)

strstr(string,search) - 在另一个字符串中匹配, 返回第一次匹配值及剩余部分

    stristr(string,search) - (大小写不敏感)

str_replace(find,replace,string,count) - 替换

    str_ireplace(find,replace,string,count) - (大小写不敏感)

substr(string,start,length) - 截取

>> 转换

explode(separator,string,limit) - 字符串 -> 数组

    implode(separator, array) - 数组 -> 字符串

    join(separator,array) - 同上

str_split(string,length) - 字符串分割为数组

parse_str(string,array) - 解析Query串为数组

strtolower(string) - 小写

    strtoupper(string) - 大写

str_shuffle(string) - 随机打散

strrev(string) - 反转

>> 输出

echo(string)

    print(string)

    printf(format,arg1,arg2,arg++) - 格式化输出

    fprintf(stream,format,arg1,arg2,arg++) - 格式化输出到文件

    sprintf(format,arg1,arg2,arg++) - 格式化到字符串

>> 格式化

str_pad(string,length,pad_string,pad_type) - 填充到指定长度

str_repeat(string,repeat) - 重复指定次数

chunk_split(string,length,end) - 插入分隔符

number_format(number,decimals,decimalpoint,separator) - 格式化数字

trim(string,charlist) - 两端清理

strip_tags(string,allow) - 剥离HTML, XML, PHP标签

>> 转义

addslashes(string) - 在预定义字符前添加反斜杠

    stripslashes(string)

    addcslashes(string,characters) - 在自定义字符前添加反斜杠

    stripcslashes(string)

htmlentities(string,quotestyle,character-set) - 全部字符 -> HTML实体

    html_entity_decode(string,quotestyle,character-set) - HTML实体 -> 字符

    htmlspecialchars(string,quotestyle,character-set) - 部分字符( & | " | ' | ) -> HTML实体

    htmlspecialchars_decode(string,quotestyle) - HTML实体 -> 字符

nl2br(string) - /n ->

>> 加密

crypt(str,salt) - 单向有损加密

    md5(string,raw) - 散列

        md5_file(path,raw) - 文件有损摘要

    sha1(string,raw) - SHA1散列

        sha1_file(file,raw)

>> ASCII

ord(string) - 返回第一个字符的ASCII

数组 ARRAY

---

>> 新建&赋值

list(var1,var2,val3...) = $array - 用数组元素给变量赋值

range(min,max,step) - 建立指定范围的数组

array_combine(array1,array2) - 新建数组：array1为key，array2为value

>> 栈

array_pop(array) - 尾部出栈

array_push(array,value1,value2...) - 尾部入栈，相当于$array[] = $value

array_shift(array) - 首部出栈

array_unshift(array,value1,value2,value3...) - 首部入栈

>> 统计

array_sum(array) - 所有元素的和

array_product(array) - 所有元素的乘积

count(array,mode) - 统计元素个数，同 sizeof(array,mode)

array_count_values(array)  - 统计元素出现次数

array_keys(array,value,strict) - 返回对应的key

array_values(array) - 返回所有value

array_search(value,array,strict) - 搜索value，返回key

in_array(value,array,type) - 检查value是否存在

array_key_exists(key,array) - 检查key是否存在

>> 比较

array_diff(array1,array2,array3...) - 差集

    array_diff_assoc(array1,array2,array3...)

array_diff_key(array1,array2,array3...)

array_intersect(array1,array2,array3...) - Intersection

array_intersect_assoc(array1,array2,array3...)

array_intersect_key(array1,arra y2,array3. ..)

>>Sort

sort(array,sorttype) - sort by value in ascending order (rebuild index)

rsort(array, sorttype) - sort by value in descending order (rebuild index)

asort(array, sorttype) - Forward sorting by value (keep index) arsort(array, sorttype) - Sort reverse by value (keep index)

natsort(array) - Natural sorting

natcasesort(array) - Size-insensitive natural sorting

ksort(array,sorttype) - Forward sorting by key

krsort(array,sorttype) - Reverse sorting by key

array_multisort(array, sorting order, sorting type) - Sorting

shuffle(array) - Randomly sort Random array sorting

array_reverse(array,preserve) - Reverse the order

>> Modify

array_change_key_case(array,case) - Convert case

array_filter(array,function) - Filter with the given method

array_map(function,array1,array2,array3...) - apply method to each element

array_fill(start,number,value) - fill array with given value

array_pad(array,size,value) - put Fill the array to a fixed length

array_flip(array) - exchange key and value

array_unique(array) - remove duplicates

>> merge & split

array_chunk(array,size,preserve_key) - cut

array_rand( array,number) - Randomly return array elements (return key when number=1)

array_slice(array,offset,length,preserve) - Intercept

array_splice(array,offset,length,array) - Replace

array_merge(array1 , array2, array3...) - Merge

array_merge_recursive(array1, array2, array3...) - Recursive merge (when the keys are the same)

>> Pointer

each(array) - Return the current element, and Move the pointer

key(array) - current key

current(array) - current value, same as pos(array)

next(array) - next value

prev(array) - previous value

reset( array) - Move to the beginning

end(array) - Move to the end

Date & Time DATE & TIME

---

checkdate(month,day,year) - Check the validity of the date

date(format,timestamp) - Formatted output time

>> Information

getdate(timestamp) - Get date & time information array

microtime(get_as_float) - Get current time information array

>> Timestamp

time() - Current time timestamp

strtotime(time,now) - Convert string to timestamp

mktime(hour,minute,second,month,day,year,is_dst) - Get timestamp

Directory DIR

---

opendir(path,context) - open the directory, return the handle

readdir(handle) - return the file name

closedir(handle) - close the handle

rewinddir(handle) - reset the handle

dir(directory) - Open the directory and return the object. The object has 3 methods: read(), rewind(), close()

File FILE

---

clearstatcache() - Clear the file cache status

parse_ini_file( file, process_sections) - Parse the ini file and return an array

set_file_buffer(file,buffer) - Set the file output buffer

>> File operation

readfile(filename,include_path,context) - Read the file and output to the buffer

readlink(linkpath)

file(path,include_path,context) - read the file as an array

file_get_contents(path,include_path,context,start,max_length) - read the file into a string

file_put_contents(path,data,mode,context) - write to the file

fopen(filename, mode, include_path,context) - open the file

fgetc(file) - read characters

fgets(file,length) - read One line, or specify the length g FGETCSV (File, Length, SEPAROR, Enclosure) -Chn CSV format, read a line

FPUTS (File, String, LENGTH) -Writing files

FPUTCSV (FILE, FIELDS, Seperator, Encloss) - Write a file in CSV format

fread(file,length) - Read a file

fwrite(file,string,length) - Write a file

fflush(file) - Output the buffer content to a file

ftruncate( file,size) - intercept the file

flock(file,lock,block) - lock the file

ftell(file) - pointer position

fseek(file,offset,whence) - position the pointer

rewind(file) - rewind Set the pointer position

 feof(file) - whether the end of the file is reached

                                                                                                         fstat (()) (     )

>> File status

fstat(file) - file information

 lstat(file) - file/soft link information

fileatime(filename) - last access time

filectime(filename) - on The inode information modification time

filemtime(filename) - the last file content modification time

filegroup(filename) - file user group

fileowner(filename) - file user

fileperms(filename) - file permissions

fileinode( filename) - file inode

filesize(filename) - file size

filetype(filename) - file type

>> path

pathinfo(path,options) - path information

linkinfo(path) - hard link Information

basename(path,suffix) - Get the file name

dirname(path) - Get the directory path

realpath(path) - Get the absolute path

>> Size

disk_total_space(directory) - Get the total space size

disk_free_space(directory) - size of available space

>> Determine

file_exists(path) - whether the file or directory exists

is_dir(path) - directory

is_file(path) - file

is_link(path ) - connection

is_readable(path) - readable

is_writable(path) - writable

is_executable(path) - executable

>> system

mkdir(path,mode,recursive,context)

rmdir(dir,context)

link(target,link)

unlink(filename,context)

copy(source,destination)

rename(oldname,newname,context)

touch (filename, time, atime)

chgrp(filename,group)

chmod(filename,mode)chown(filename,owner)glob(pattern,flags)

>> ; HTTP POST

is_uploaded_file(filename) - Whether the file is uploaded via HTTP POST

move_uploaded_file(filename,newloc) - Move the uploaded file

Errors and exceptions ERROR & EXCEPTION

debug_backtrace() - Generate backtrace associative array

debug_print_backtrace() - Output

error_get_last() - Get the lowest level error

---

error_log(error, type, destination, headers) - Error log

error_reporting(report_level) - Set the error reporting level

>> Trigger error/throw exception

trigger_error(error_message,error_types) - trigger error

throw new Exception() - throw exception

>> Specify handler function

set_error_handler(error_function,error_types) - error handling function

set_exception_handler(exception_function) - Exception handling function

Filter FILTER

filter_has_var(type, variable) - Whether there is this variable

filter_input(input_type, variable, filter, options) - Filter external input

filter_input_array ( input_type, args)

---

filter_var(variable, filter, options) - Filter variable

filter_var_array(array, args)

>> Filter

SANITIZE(filter)

FILTER_SANITIZE_STRING - Remove or encode special characters

FILTER_SANITIZE_ENCODED - Similar to urlendode

FILTER_SANITIZE_SPECIAL_CHARS - Similar to urlendode

FILTER_SANITIZE_MAGIC_QUOTES - Similar to addslashes

FILTER_SANITIZE_URL

FILTER_SANITIZ E_EMAIL

FILTER_SANITIZE_NUMBER_INT

FILTER_SANITIZE_NUMBER_FLOAT

VALIDATE(verification)

FILTER_VALIDATE_BOOLEAN

FILTER_VALIDATE_INT

FILTER_VALIDATE_FLOAT

FILTER_VALIDATE_URL

FILTER_VALIDATE_EMAIL

FILTER_VALIDATE_IP

FILTER_VALIDATE_REGEXP

FILTER_CALLBACK - Call custom function

File transfer FTP

>> connection

ftp_connect(host,port,timeout) - Establish a connection

ftp_ssl_connect(host,port ,timeout) - SSL secure connection

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ftp_login(ftp_connection,username,password) - Log in to FTP

ftp_raw(ftp_connection,command) - Send command

ftp_exec(ftp_connection,command) - Execute command (after logging in) ftp_pas v(ftp_connection,mode) - whether to be passive Mode

ftp_systype(ftp_connection) - Remote machine system

ftp_get_option(ftp_connection,option) - Get parameters

ftp_set_option(ftp_connection,option,value) - Set options

    ftp_close(ftp_connection) - 关闭连接，同 ftp_quit()

>> 目录

ftp_mkdir(ftp_connection,dir) - 建立目录

ftp_rmdir(ftp_connection,dir) - 删除目录

ftp_chdir(ftp_connection,dir) - 改变目录

ftp_cdup(ftp_connection) - 父目录

ftp_pwd(ftp_connection) - 当前路径
ftp_nlist(ftp_connection,dir) - 列目录

ftp_rawlist(ftp_connection,dir,recursive) - Directory list details

>> Files

ftp_put(ftp_connection,remote,local,mode,resume) - Upload files

ftp_fput(ftp_connection,remote,local,mode,resume ) - Upload locally opened files

ftp_nb_put(ftp_connection,remote,local,mode,resume) - Asynchronous upload

ftp_nb_fput(ftp_connection,remote,local,mode,resume) - Asynchronously upload locally opened files

ftp_get(ftp_connection, local,remote,mode,resume) - Download file

ftp_fget(ftp_connection,local,remote,mode,resume) - Download and open file locally

ftp_nb_get(ftp_connection,local,remote,mode,resume) - Asynchronous download

ftp_nb_fget(ftp_connection,local,remote,mode,resume) - Asynchronously download to local open file

ftp_delete(ftp_connection,path) - Delete file

ftp_rename(ftp_connection,from,to) - Rename

ftp_chmod(ftp_connection, mode,file) - change file permissions

ftp_size(ftp_connection,remote_file) - file size

ftp_mdtm(ftp_connection,file) - file last modified time

HTTP

---

header(string,replace,http_response_code) - send HTTP headers

headers_list() - Headers list array

headers_sent() - Whether headers have been sent

setcookie(name,value,expire,path,domain,secure) - Set Cookie

Math MATH

---

>> Arithmetic

round() - Rounding

ceil() - Rounding up

floor() - Rounding down

max() - Return the maximum value

min () - Returns the minimum value

pow(x,y) - x raised to the yth power

sqrt() - Square root

abs() - Absolute value

rand(min,max) - Returns a random integer

>> Base

base_convert(number,frombase,tobase) - Any base conversion

decbin() - Decimal -> Binary

Bindec(binary_string) - Binary -> Decimal

dechex( ) - decimal-> hexadecimal

hexdec() - hexadecimal-> decimal

decoct() - decimal-> octal

octdec() - octal-> decimal

> ;> Trigonometric functions

cos() - cosine

acos() - inverse cosine

sin() - sine

asin() - inverse sine

tan() - tangent

atan() - - anyway Cut

MySQL

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>> connection

mysql_connect(server,user,pwd,newlink,clientflag) - connection

mysql_pconnect(server,user,pwd,clientflag) - long connection

Mysql_close(connection ) - Close

>> Query

mysql_select_db(database, connection) - Select the database

mysql_query(sql) - Execute the query and return the resource handle

mysql_fetch_array(data, array_type) - Query, return the array

mysql_fetch_assoc (data) - Returns associative array

mysql_fetch_object(data) - Query, returns object

mysql_num_rows(data) - Number of result rows

>> Connection status

mysql_ping(connection) - Check connection, reset if disconnected Connect

mysql_thread_id(connection) - Current connection ID

mysql_client_encoding(connection) - Current character set

mysql_list_dbs(connection) - List database

>> Last operation

mysql_info(connection) - Last query Information

mysql_affected_rows(connection) - number of affected rows

mysql_insert_id(connection) - last inserted ID

mysql_errno(connection) - last error ID

mysql_error(connection) - last error message

input and output I/O

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>> Print

print_r(value)

var_dump(value) - with type

var_export(value) - return legal PHP code

The above introduces [PHP]PHP functions, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.