PHP function sorting, php function_PHP tutorial

PHP functions organized, php functions

I have moved the PHP functions of W3SCHOOLE over for easy reference in the future

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PHP Array function Collapse

Function	Description	PHP
array()	Create an array.	3
array_change_key_case()	Returns an array whose keys are all uppercase or lowercase.	4
array_chunk()	Split an array into new array blocks.	4
array_combine()	Create a new array by merging two arrays.	5
array_count_values()	Used to count the number of occurrences of all values ​​in the array.	4
array_diff()	Returns the difference array of two arrays.	4
array_diff_assoc()	Compare the key name and key value, and return the difference array of the two arrays.	4
array_diff_key()	Compare key names and return the difference array of the two arrays.	5
array_diff_uassoc()	Calculate the difference set of arrays by doing index checking through the callback function provided by the user.	5
array_diff_ukey()	Use the callback function to compare the key names and calculate the difference set of the array.	5
array_fill()	Fills the array with the given values.	4
array_filter()	Use callback function to filter the elements in the array.	4
array_flip()	Swap the keys and values ​​in the array.	4
array_intersect()	Calculate the intersection of arrays.	4
array_intersect_assoc()	Compare the key name and key value and return the intersection array of the two arrays.	4
array_intersect_key()	Calculate the intersection of arrays using key name comparison.	5
array_intersect_uassoc()	Calculate the intersection of arrays with index checking, and use callback functions to compare the indices.	5
array_intersect_ukey()	Use the callback function to compare key names to calculate the intersection of arrays.	5
array_key_exists()	Checks whether the given key or index exists in the array.	4
array_keys()	Returns all key names in the array.	4
array_map()	Apply the callback function to the cells of the given array.	4
array_merge()	Combine one or more arrays into one array.	4
array_merge_recursive()	Recursively merge one or more arrays.	4
array_multisort()	Sort multiple arrays or multidimensional arrays.	4
array_pad()	Pall the array to the specified length with values.	4
array_pop()	Pop the last element of the array (pop off the stack).	4
array_product()	Calculate the product of all values ​​in an array.	5
array_push()	Push one or more cells (elements) to the end of the array (push).	4
array_rand()	Randomly select one or more elements from the array and return it.	4
array_reduce()	Use a callback function to iteratively reduce the array to a single value.	4
array_reverse()	Reverse the order of elements in the original array, create a new array and return it.	4
array_search()	Search for the given value in the array and return the corresponding key name if successful.	4
array_shift()	Deletes the first element in the array and returns the value of the deleted element.	4
array_slice()	Retrieve a value from the array based on the condition and return it.	4
array_splice()	Remove part of the array and replace it with other values.	4
array_sum()	Calculate the sum of all values ​​in an array.	4
array_udiff()	Use callback function to compare data to calculate the difference of arrays.	5
array_udiff_assoc()	Calculate the difference set of arrays with index checking, and use callback functions to compare data.	5
array_udiff_uassoc()	With index check, calculate the difference set of the array, and use the callback function to compare the data and index.	5
array_uintersect()	Calculate the intersection of arrays and use callback functions to compare data.	5
array_uintersect_assoc()	Calculate the intersection of arrays with index checking and use callback functions to compare data.	5
array_uintersect_uassoc()	Calculate the intersection of arrays with index checking, and use callback functions to compare data and indexes.	5
array_unique()	Remove duplicate values ​​from the array.	4
array_unshift()	Insert one or more elements at the beginning of the array.	4
array_values()	Returns all values ​​in the array.	4
array_walk()	Apply a user function to each member of the array.	3
array_walk_recursive()	Apply the user function recursively to each member of the array.	5
arsort()	Reverse sort the array and maintain index relationship.	3
asort()	Sort the array and maintain index relationship.	3
compact()	Create an array including variable names and their values.	4
count()	Count the number of elements in an array or the number of attributes in an object.	3
current()	Returns the current element in the array.	3
each()	Returns the current key/value pair in the array and moves the array pointer forward one step.	3
end()	Point the internal pointer of the array to the last element.	3
extract()	Import variables from the array into the current symbol table.	3
in_array()	Checks whether the specified value exists in the array.	4
key()	Get the key name from the associative array.	3
krsort()	Sort the array in reverse order by key name.	3
ksort()	Sort the array by key name.	3
list()	Assign the values ​​in the array to some variables.	3
natcasesort()	Sort the array in a case-insensitive manner using the "natural sorting" algorithm.	4
natsort()	Sort the array using the "natural sorting" algorithm.	4
next()	Move the internal pointer in the array forward one position.	3
pos()	An alias for current().	3
prev()	Rewind the internal pointer of the array by one bit.	3
range()	Create an array containing elements in the specified range.	3
reset()	Point the internal pointer of the array to the first element.	3
rsort()	Sort the array in reverse order.	3
shuffle()	Rearrange the elements in the array in random order.	3
sizeof()	An alias for count().	3
sort()	Sort the array.	3
uasort()	Use user-defined comparison functions to sort values ​​in an array and maintain index association.	3
uksort()	Use user-defined comparison function to sort the keys in the array.	3
usort()	Sort the values ​​in an array using a user-defined comparison function.	3

PHP Calendar function Collapse

函数	描述	PHP
cal_days_in_month()	针对指定的年份和日历，返回一个月中的天数。	4
cal_from_jd()	把儒略日计数转换为指定日历的日期。	4
cal_info()	返回有关给定日历的信息。	4
cal_to_jd()	把日期转换为儒略日计数。	4
easter_date()	返回指定年份的复活节午夜的 Unix 时间戳。	3
easter_days()	返回指定年份的复活节与 3 月 21 日之间的天数。	3
FrenchToJD()	将法国共和历法转换成为儒略日计数。	3
GregorianToJD()	将格利高里历法转换成为儒略日计数。	3
JDDayOfWeek()	返回日期在周几。	3
JDMonthName()	返回月的名称。	3
JDToFrench()	把儒略日计数转换为法国共和国历法。	3
JDToGregorian()	把儒略日计数转换为格利高里历法。	3
jdtojewish()	把儒略日计数转换为犹太历法。	3
JDToJulian()	把儒略日计数转换为儒略历。	3
jdtounix()	把儒略日计数转换为 Unix 时间戳。	4
JewishToJD()	把犹太历法转换为儒略日计数。	3
JulianToJD()	把儒略历转换为儒略日计数。	3
unixtojd()	把 Unix 时间戳转换为儒略日计数。	4

PHP Date / Time Function Collapse

函数	描述	PHP
checkdate()	验证格利高里日期。	3
date_default_timezone_get()	返回默认时区。	5
date_default_timezone_set()	设置默认时区。	5
date_sunrise()	返回给定的日期与地点的日出时间。	5
date_sunset()	返回给定的日期与地点的日落时间。	5
date()	格式化本地时间／日期。	3
getdate()	返回日期／时间信息。	3
gettimeofday()	返回当前时间信息。	3
gmdate()	格式化 GMT/UTC 日期/时间。	3
gmmktime()	取得 GMT 日期的 UNIX 时间戳。	3
gmstrftime()	根据本地区域设置格式化 GMT/UTC 时间／日期。	3
idate()	将本地时间/日期格式化为整数	5
localtime()	返回本地时间。	4
microtime()	返回当前时间的微秒数。	3
mktime()	返回一个日期的 Unix 时间戳。	3
strftime()	根据区域设置格式化本地时间／日期。	3
strptime()	解析由 strftime 生成的日期／时间。	5
strtotime()	将任何英文文本的日期或时间描述解析为 Unix 时间戳。	3
time()	返回当前时间的 Unix 时间戳。	3

PHP Directory Function Collapse

函数	描述	PHP
chdir()	改变当前的目录。	3
chroot()	改变当前进程的根目录。	4
dir()	打开一个目录句柄，并返回一个对象。	3
closedir()	关闭目录句柄。	3
getcwd()	返回当前目录。	4
opendir()	打开目录句柄。	3
readdir()	返回目录句柄中的条目。	3
rewinddir()	重置目录句柄。	3
scandir()	列出指定路径中的文件和目录。	5

PHP Error and Logging functions Collapse

函数	描述	PHP
debug_backtrace()	生成 backtrace。	4
debug_print_backtrace()	输出 backtrace。	5
error_get_last()	获得最后发生的错误。	5
error_log()	向服务器错误记录、文件或远程目标发送一个错误。	4
error_reporting()	规定报告哪个错误。	4
restore_error_handler()	恢复之前的错误处理程序。	4
restore_exception_handler()	恢复之前的异常处理程序。	5
set_error_handler()	设置用户自定义的错误处理函数。	4
set_exception_handler()	设置用户自定义的异常处理函数。	5
trigger_error()	创建用户自定义的错误消息。	4
user_error()	trigger_error() 的别名。	4

PHP Filesystem Function Collapse

Function	Description	PHP
basename()	Returns the filename portion of the path.	3
chgrp()	Change file group.	3
chmod()	Change file mode.	3
chown()	Change file owner.	3
clearstatcache()	Clear file status cache.	3
copy()	Copy the file.	3
delete()	See unlink() or unset().
dirname()	Returns the directory name portion of the path.	3
disk_free_space()	Returns the available space of the directory.	4
disk_total_space()	Returns the total disk capacity of a directory.	4
diskfreespace()	An alias for disk_free_space().	3
fclose()	Close open files.	3
feof()	Test whether the file pointer reaches the end of the file.	3
ffflush()	Output buffered contents to an open file.	4
fgetc()	Return characters from an open file.	3
fgetcsv()	Parse a line from an open file and validate CSV fields.	3
fgets()	Returns a line from an open file.	3
fgetss()	Read a line from an open file and filter out HTML and PHP tags.	3
file()	Read the file into an array.	3
file_exists()	Check if the file or directory exists.	3
file_get_contents()	Read file into string.	4
file_put_contents()	Write a string to a file.	5
fileatime()	Returns the last access time of the file.	3
filectime()	Returns the last time the file was changed.	3
filegroup()	Returns the group ID of the file.	3
fileinode()	Returns the inode number of the file.	3
filemtime()	Returns the last modification time of the file.	3
fileowner()	The user ID (owner) of the file.	3
fileperms()	Returns the permissions of the file.	3
filesize()	Returns the file size.	3
filetype()	Return the file type.	3
flock()	Lock or release files.	3
fnmatch()	Match filenames or strings based on the specified pattern.	4
fopen()	Open a file or URL.	3
fpassthru()	Read data from the open file until EOF and write the result to the output buffer.	3
fputcsv()	Format rows to CSV and write to an open file.	5
fputs()	An alias for fwrite().	3
fread()	Read the open file.	3
fscanf()	Parse the input according to the specified format.	4
fseek()	Locate within the open file.	3
fstat()	Returns information about an open file.	4
ftell()	Returns the read/write position of the file pointer	3
ftruncate()	Truncate the file to the specified length.	4
fwrite()	Write to file.	3
glob()	Returns an array containing filenames/directories matching the specified pattern.	4
is_dir()	Determine whether the specified file name is a directory.	3
is_executable()	Determine whether the file is executable.	3
is_file()	Determine whether the specified file is a regular file.	3
is_link()	Determine whether the specified file is a connection.	3
is_readable()	Determine whether the file is readable.	3
is_uploaded_file()	Determine whether the file was uploaded via HTTP POST.	3
is_writable()	Determine whether the file is writable.	4
is_writeable()	An alias for is_writable().	3
link()	Create a hard link.	3
linkinfo()	Returns information about a hard link.	3
lstat()	Returns information about the file or symbolic link.	3
mkdir()	Create a directory.	3
move_uploaded_file()	Move uploaded files to a new location.	4
parse_ini_file()	Parse a configuration file.	4
pathinfo()	Returns information about the file path.	4
pclose()	Close the process opened by popen().	3
popen()	Open a process.	3
readfile()	Read a file and output to the output buffer.	3
readlink()	Returns the target of the symbolic link.	3
realpath()	Returns the absolute pathname.	4
rename()	A file or directory with the same name.	3
rewind()	Rewind the position of the file pointer.	3
rmdir()	Delete empty directories.	3
set_file_buffer()	Set the buffer size for open files.	3
stat()	Returns information about the file.	3
symlink()	Create a symbolic link.	3
tempnam()	Create a unique temporary file.	3
tmpfile()	Create temporary files.	3
touch()	Set file access and modification time.	3
umask()	Change the file permissions of a file.	3
unlink()	Delete files.	3

PHP Filter Function Collapse

函数	描述	PHP
filter_has_var()	检查是否存在指定输入类型的变量。	5
filter_id()	返回指定过滤器的 ID 号。	5
filter_input()	从脚本外部获取输入，并进行过滤。	5
filter_input_array()	从脚本外部获取多项输入，并进行过滤。	5
filter_list()	返回包含所有得到支持的过滤器的一个数组。	5
filter_var_array()	获取多项变量，并进行过滤。	5
filter_var()	获取一个变量，并进行过滤。	5

Function Description PHP filter_has_var() Checks if a variable of the specified input type exists. 5 filter_id() Returns the ID number of the specified filter. 5 filter_input() Get input from outside the script and filter it. 5 filter_input_array() Get multiple inputs from outside the script and filter them. 5 filter_list() Returns an array containing all supported filters. 5 filter_var_array() Get multiple variables and filter them. 5 filter_var() Get a variable and filter it. 5

PHP FTP function Collapse

函数	描述	PHP
ftp_alloc()	为要上传到 FTP 服务器的文件分配空间。	5
ftp_cdup()	把当前目录改变为 FTP 服务器上的父目录。	3
ftp_chdir()	改变 FTP 服务器上的当前目录。	3
ftp_chmod()	通过 FTP 设置文件上的权限。	5
ftp_close()	关闭 FTP 连接。	4
ftp_connect()	打开 FTP 连接。	3
ftp_delete()	删除 FTP 服务器上的文件。	3
ftp_exec()	在 FTP 上执行一个程序/命令。	4
ftp_fget()	从 FTP 服务器上下载一个文件并保存到本地一个已经打开的文件中。	3
ftp_fput()	上传一个已打开的文件，并在 FTP 服务器上把它保存为一个文件。	3
ftp_get_option()	返回当前 FTP 连接的各种不同的选项设置。	4
ftp_get()	从 FTP 服务器下载文件。	3
ftp_login()	登录 FTP 服务器。	3
ftp_mdtm()	返回指定文件的最后修改时间。	3
ftp_mkdir()	在 FTP 服务器创建一个新目录。	3
ftp_nb_continue()	连续获取／发送文件 (non-blocking)。	4
ftp_nb_fget()	从FTP服务器上下载文件并保存到本地已经打开的文件中(non-blocking)	4
ftp_nb_fput()	上传已打开的文件，并在FTP服务器上把它保存为文件(non-blocking)。	4
ftp_nb_get()	从 FTP 服务器下载文件 (non-blocking)。	4
ftp_nb_put()	把文件上传到服务器 (non-blocking)。	4
ftp_nlist()	返回指定目录的文件列表。	3
ftp_pasv()	返回当前 FTP 被动模式是否打开。	3
ftp_put()	把文件上传到服务器。	3
ftp_pwd()	返回当前目录名称。	3
ftp_quit()	ftp_close() 的别名。	3
ftp_raw()	向 FTP 服务器发送一个 raw 命令。	5
ftp_rawlist()	返回指定目录中文件的详细列表。	3
ftp_rename()	重命名 FTP 服务器上的文件或目录。	3
ftp_rmdir()	删除 FTP 服务器上的目录。	3
ftp_set_option()	设置各种 FTP 运行时选项。	4
ftp_site()	向服务器发送 SITE 命令。	3
ftp_size()	返回指定文件的大小。	3
ftp_ssl_connect()	打开一个安全的 SSL-FTP 连接。	4
ftp_systype()	返回远程 FTP 服务器的系统类型标识符。	3

PHP HTTP function Collapse

函数	描述	PHP
header()	向客户端发送原始的 HTTP 报头。	3
headers_list()	返回已发送的（或待发送的）响应头部的一个列表。	5
headers_sent()	检查 HTTP 报头是否发送/已发送到何处。	3
setcookie()	向客户端发送一个 HTTP cookie。	3
setrawcookie()	不对 cookie 值进行 URL 编码，发送一个 HTTP cookie。	5

PHP libxml function Collapse

函数	描述	PHP
libxml_clear_errors()	清空 libxml 错误缓冲。	5
libxml_get_errors()	检索错误数组。	5
libxml_get_last_error()	从 libxml 检索最后的错误。	5
libxml_set_streams_context()	为下一次 libxml 文档加载或写入设置流环境。	5
libxml_use_internal_errors()	禁用 libxml 错误，允许用户按需读取错误信息。	5

PHP Mail Function Collapse

函数	描述	PHP
ezmlm_hash()	计算 EZMLM 邮件列表系统所需的散列值。	3
mail()	允许您从脚本中直接发送电子邮件。	3

PHP Math Function Collapse

函数	描述	PHP
abs()	绝对值。	3
acos()	反余弦。	3
acosh()	反双曲余弦。	4
asin()	反正弦。	3
asinh()	反双曲正弦。	4
atan()	反正切。	3
atan2()	两个参数的反正切。	3
atanh()	反双曲正切。	4
base_convert()	在任意进制之间转换数字。	3
bindec()	把二进制转换为十进制。	3
ceil()	向上舍入为最接近的整数。	3
cos()	余弦。	3
cosh()	双曲余弦。	4
decbin()	把十进制转换为二进制。	3
dechex()	把十进制转换为十六进制。	3
decoct()	把十进制转换为八进制。	3
deg2rad()	将角度转换为弧度。	3
exp()	返回 Ex 的值。	3
expm1()	返回 Ex - 1 的值。	4
floor()	向下舍入为最接近的整数。	3
fmod()	返回除法的浮点数余数。	4
getrandmax()	显示随机数最大的可能值。	3
hexdec()	把十六进制转换为十进制。	3
hypot()	计算直角三角形的斜边长度。	4
is_finite()	判断是否为有限值。	4
is_infinite()	判断是否为无限值。	4
is_nan()	判断是否为合法数值。	4
lcg_value()	返回范围为 (0, 1) 的一个伪随机数。	4
log()	自然对数。	3
log10()	以 10 为底的对数。	3
log1p()	返回 log(1 number)。	4
max()	返回最大值。	3
min()	返回最小值。	3
mt_getrandmax()	显示随机数的最大可能值。	3
mt_rand()	使用 Mersenne Twister 算法返回随机整数。	3
mt_srand()	播种 Mersenne Twister 随机数生成器。	3
octdec()	把八进制转换为十进制。	3
pi()	返回圆周率的值。	3
pow()	返回 x 的 y 次方。	3
rad2deg()	把弧度数转换为角度数。	3
rand()	返回随机整数。	3
round()	对浮点数进行四舍五入。	3
sin()	正弦。	3
sinh()	双曲正弦。	4
sqrt()	平方根。	3
srand()	播下随机数发生器种子。	3
tan()	正切。	3
tanh()	双曲正切。	4

PHP MySQL Function Collapse

Function	Description	PHP
mysql_affected_rows()	Get the number of record rows affected by the previous MySQL operation.	3
mysql_change_user()	Disapprove. Change logged in user in active connection	3
mysql_client_encoding()	Returns the name of the currently connected character set	4
mysql_close()	Close non-persistent MySQL connections.	3
mysql_connect()	Open a non-persistent MySQL connection.	3
mysql_create_db()	Disapprove. Create a new MySQL database. Use mysql_query() instead.	3
mysql_data_seek()	Move the record pointer.	3
mysql_db_name()	Return the database name from a call to mysql_list_dbs().	3
mysql_db_query()	Disapprove. Send a MySQL query. Use mysql_select_db() and mysql_query() instead.	3
mysql_drop_db()	Disapprove. Drop (delete) a MySQL database. Use mysql_query() instead.	3
mysql_errno()	Returns the numeric encoding of the error message in the previous MySQL operation.	3
mysql_error()	Returns the text error message generated by the previous MySQL operation.	3
mysql_escape_string()	Disapprove. Escape a string for use with mysql_query. Use mysql_real_escape_string() instead.	4
mysql_fetch_array()	Get a row from the result set as an associative array, a numeric array, or both.	3
mysql_fetch_assoc()	Get a row from the result set as an associative array.	4
mysql_fetch_field()	Get column information from the result set and return it as an object.	3
mysql_fetch_lengths()	Get the length of the content of each field in the result set.	3
mysql_fetch_object()	Get a row from the result set as an object.	3
mysql_fetch_row()	Get a row from the result set as an array of numbers.	3
mysql_field_flags()	Get the flag associated with the specified field from the result.	3
mysql_field_len()	Returns the length of the specified field.	3
mysql_field_name()	Get the field name of the specified field in the result.	3
mysql_field_seek()	Sets the pointer in the result set to the specified field offset.	3
mysql_field_table()	Get the table name where the specified field is located.	3
mysql_field_type()	Get the type of the specified field in the result set.	3
mysql_free_result()	Release result memory.	3
mysql_get_client_info()	Get MySQL client information.	4
mysql_get_host_info()	Get MySQL host information.	4
mysql_get_proto_info()	Get MySQL protocol information.	4
mysql_get_server_info()	Get MySQL server information.	4
mysql_info()	Get the latest query information.	4
mysql_insert_id()	Get the ID generated by the previous INSERT operation.	3
mysql_list_dbs()	List all databases in MySQL server.	3
mysql_list_fields()	Disapprove. List fields in MySQL results. Use mysql_query() instead.	3
mysql_list_processes()	List MySQL processes.	4
mysql_list_tables()	Disapprove. List tables in a MySQL database. Use Use mysql_query() instead.	3
mysql_num_fields()	Get the number of fields in the result set.	3
mysql_num_rows()	Get the number of rows in the result set.	3
mysql_pconnect()	Open a persistent connection to the MySQL server.	3
mysql_ping()	Ping a server connection and reconnect if there is no connection.	4
mysql_query()	Send a MySQL query.	3
mysql_real_escape_string()	Escape special characters in strings used in SQL statements.	4
mysql_result()	Get result data.	3
mysql_select_db()	Select MySQL database.	3
mysql_stat()	Get the current system status.	4
mysql_tablename()	Disapprove. Get the table name. Use mysql_query() instead.	3
mysql_thread_id()	Returns the ID of the current thread.	4
mysql_unbuffered_query()	Send a SQL query to MySQL (without getting/caching the results).	4

PHP 5 MySQLi function Collapse

Function	Description
mysqli_affected_rows()	Returns the number of affected rows from the previous Mysql operation.
mysqli_autocommit()	Turn on or off the automatic submission of database modifications.
mysqli_change_user()	Change the user for the specified database connection.
mysqli_character_set_name()	Returns the default character set for database connections.
mysqli_close()	Close the previously opened database connection.
mysqli_commit()	Commit the current transaction.
mysqli_connect_errno()	Returns the error code of the last connection call.
mysqli_connect_error()	Returns the error description of the last connection error.
mysqli_connect()	Open a new connection to the Mysql server.
mysqli_data_seek()	Adjust the result pointer to an arbitrary row in the result set.
mysqli_debug()	Perform debugging operations.
mysqli_dump_debug_info()	Dump debugging information to the log.
mysqli_errno()	Returns the error code generated by the most recent function call.
mysqli_error_list()	Returns a list of errors generated by the most recent function call.
mysqli_error()	Returns the error code generated by the most recent function call described by a string.
mysqli_fetch_all()	Fetch all result rows and return the result set as associative data, numerically indexed array, or both.
mysqli_fetch_array()	Fetch a row of results as an associative array, a numeric index array, or both.
mysqli_fetch_assoc()	Fetch a row of results as an associative array.
mysqli_fetch_field_direct()	Return the metadata of a single field in the result set as an object.
mysqli_fetch_field()	Returns the next field in the result set as an object.
mysqli_fetch_fields()	Returns an array of objects representing the fields in the result set.
mysqli_fetch_lengths()	Returns the column length of the current row in the result set.
mysqli_fetch_object()	Returns the current row of the result set as an object.
mysqli_fetch_row()	Grabs a row from the result set and returns it as an enum array.
mysqli_field_count()	Returns the number of columns obtained by the latest query.
mysqli_field_seek()	Sets the field pointer to a specific field start position.
mysqli_field_tell()	Returns the position of the field pointer.
mysqli_free_result()	Release the memory associated with a result set.
mysqli_get_charset()	Returns the character set object.
mysqli_get_client_info()	Returns the Mysql client version information in string type.
mysqli_get_client_stats()	Return statistics for each client process.
mysqli_get_client_version()	Returns the Mysql client version information in integer type.
mysqli_get_connection_stats()	Returns client connection statistics.
mysqli_get_host_info()	Returns the MySQL server hostname and connection type.
mysqli_get_proto_info()	Returns the MySQL protocol version.
mysqli_get_server_info()	Returns the MySQL server version.
mysqli_get_server_version()	Returns the MySQL server version information in integer type.
mysqli_info()	Returns the retrieved information of the most recently executed query.
mysqli_init()	Initialize mysqli and return a resource type used by mysqli_real_connect().
mysqli_insert_id()	Returns the auto-generated id used in the last query.
mysql_kill()	Request the server to terminate a MySQL thread.
mysqli_more_results()	Check whether a multi-statement query has other query result sets.
mysqli_multi_query()	Execute one or more queries on the database.
mysqli_next_result()	Prepare the next result set from mysqli_multi_query().
mysqli_num_fields()	Returns the number of fields in the result set.
mysqli_num_rows()	Returns the number of rows in the result set.
mysqli_options()	Set options.
mysqli_ping()	Ping a server connection, or try to reconnect if that connection is lost.
mysqli_prepare()	Prepare a SQL statement for execution.
mysqli_query()	Execute queries on the database.
mysqli_real_connect()	Open a new connection to the Mysql server.
mysqli_real_escape_string()	Escape special characters in strings used in SQL statements.
mysqli_real_query()	Execute SQL query.
mysqli_reap_async_query()	Return the results of asynchronous query.
mysqli_refresh()	Refresh tables or caches, or reset replication server information.
mysqli_rollback()	Rollback the current transaction.
mysqli_select_db()	Change the default database for connections.
mysqli_set_charset()	Set the default client character set.
mysqli_set_local_infile_default()	Clear user-defined handlers for the load local infile command.
mysqli_set_local_infile_handler()	Set the callback function executed by the LOAD DATA LOCAL INFILE command.
mysqli_sqlstate()	Returns the SQLSTATE error code of the previous Mysql operation.
mysqli_ssl_set()	Use SSL to establish the installation connection.
mysqli_stat()	Returns the current system status.
mysqli_stmt_init()	Initializes a statement and returns an object used by mysqli_stmt_prepare().
mysqli_store_result()	Transmit the result set of the last query.
mysqli_thread_id()	Returns the thread ID of the current connection.
mysqli_thread_safe()	Returns whether thread safety is set.
mysqli_use_result()	Initialize the retrieval of a result set.
mysqli_warning_count()	Returns the number of warnings for the last query in the connection.

PHP SimpleXML Function Collapse

函数	描述	PHP
__construct()	创建一个新的 SimpleXMLElement 对象。	5
addAttribute()	给 SimpleXML 元素添加一个属性。	5
addChild()	给 SimpleXML 元素添加一个子元素。	5
asXML()	从 SimpleXML 元素获取 XML 字符串。	5
attributes()	获取 SimpleXML 元素的属性。	5
children()	获取指定节点的子。	5
getDocNamespaces()	获取 XML 文档的命名空间。	5
getName()	获取 SimpleXML 元素的名称。	5
getNamespaces()	从 XML 数据获取命名空间。	5
registerXPathNamespace()	为下一次 XPath 查询创建命名空间语境。	5
simplexml_import_dom()	从 DOM 节点获取 SimpleXMLElement 对象。	5
simplexml_load_file()	从 XML 文档获取 SimpleXMLElement 对象。	5
simplexml_load_string()	从 XML 字符串获取 SimpleXMLElement 对象。	5
xpath()	对 XML 数据运行 XPath 查询。	5

PHP String Function Collapse

Function	Description	PHP
addcslashes()	Adds a backslash before the specified character.	4
addslashes()	Adds a backslash before the specified predefined character.	3
bin2hex()	Convert a string of ASCII characters to a hexadecimal value.	3
chop()	An alias for rtrim().	3
chr()	Returns characters from the specified ASCII value.	3
chunk_split()	Split the string into a series of smaller parts.	3
convert_cyr_string()	Convert characters from one Cyrillic character to another.	3
convert_uudecode()	Decode uuencoded strings.	5
convert_uuencode()	Encode the string using uuencode algorithm.	5
count_chars()	Returns information about the characters used in the string.	4
crc32()	Calculate the 32-bit CRC of a string.	4
crypt()	One-way string encryption (hashing).	3
echo()	Output string.	3
explode()	Break the string into an array.	3
fprintf()	Write the formatted string to the specified output stream.	5
get_html_translation_table()	Return to translation table.	4
hebrev()	Convert Hebrew text from right-to-left flow to left-to-right flow.	3
hebrevc()	Same as above, and convert (n) to .	3
html_entity_decode()	Convert HTML entities to characters.	4
htmlentities()	Convert characters to HTML entities.	3
htmlspecialchars_decode()	Convert some predefined HTML entities into characters.	5
htmlspecialchars()	Convert some predefined characters into HTML entities.	3
implode()	Combine array elements into a string.	3
join()	An alias for implode().	3
levenshtein()	Returns the Levenshtein distance between two strings.	3
localeconv()	Returns an array containing local number and currency information formats.	4
ltrim()	Remove spaces or other predefined characters from the left side of a string.	3
md5()	Compute the MD5 hash of a string.	3
md5_file()	Compute the MD5 hash of the file.	4
metaphone()	Compute the metaphone key of a string.	4
money_format()	Format the string into a currency string.	4
nl_langinfo()	Returns the specified local information.	4
nl2br()	Insert an HTML newline character before each new line in the string.	3
number_format()	Format numbers by thousands grouping.	3
ord()	Returns the ASCII value of the first character of the string.	3
parse_str()	Parse the query string into variables.	3
print()	Output one or more strings.	3
printf()	Output formatted string.	3
quoted_printable_decode()	Decode quoted-printable strings.	3
quotemeta()	Adds a backslash before certain predefined characters in the string.	3
rtrim()	Remove whitespace characters or other predefined characters starting from the end of the string.	3
setlocale()	Set regional information (regional information).	3
sha1()	Compute the SHA-1 hash of a string.	4
sha1_file()	Compute the SHA-1 hash of the file.	4
similar_text()	Count the number of matching characters between two strings.	3
soundex()	Compute the soundex keys of a string.	3
sprintf()	Write the formatted string into a variable.	3
sscanf()	Parses input from a string according to the specified format.	4
str_ireplace()	Replace some characters in a string. (not case sensitive)	5
str_pad()	Padding the string to the new length.	4
str_repeat()	Repeat the string the specified number of times.	4
str_replace()	Replace some characters in a string. (Case sensitive)	3
str_rot13()	Perform ROT13 encoding of the string.	4
str_shuffle()	Randomly shuffle all characters in the string.	4
str_split()	Split the string into an array.	5
str_word_count()	Count the number of words in a string.	4
strcasecmp()	Compares two strings. (not case sensitive)	3
strchr()	Search for the first occurrence of a string within another string. Alias ​​for strstr()	3
strcmp()	Compares two strings. (Case sensitive)	3
strcoll()	Compares two strings (according to local settings).	4
strcspn()	Returns the number of characters searched in a string before any specified character is found.	3
strip_tags()	Strip HTML, XML and PHP tags.	3
stripcslashes()	Remove backslashes added by addcslashes() function.	4
stripslashes()	Remove backslashes added by addslashes() function.	3
stripos()	Returns the position of the first occurrence of a string in another string (case insensitive)	5
stristr()	Find the first occurrence of a string in another string (case insensitive)	3
strlen()	Returns the length of the string.	3
strnatcasecmp()	Uses a "natural" algorithm to compare two strings (case insensitive)	4
strnatcmp()	Uses a "natural" algorithm to compare two strings (case sensitive)	4
strncasecmp()	String comparison of first n characters (case insensitive).	4
strncmp()	String comparison of first n characters (case sensitive).	4
strpbrk()	Search for any of the specified characters in the string.