PHP惯用函数
PHP常用函数
数组函数
array_chunk //将一个数组分割成多个数组
array_key_exists //检查给定的键名或索引是否存在于数组中
array_keys //返回数组中所有的键名，并形成新的数组
array_merge //合并一个或多个数组，重建索引
array_values //返回数组中所有的值，形成新的数组(数字索引)
array //新建一个数组
arsort //对数组进行逆向排序并保持索引关系
asort //对数组进行排序并保持索引关系
count //计算数组中的单元数目或对象中的属性个数
each //返回数组中当前的键／值，并将数组指针向前移动一步
end //将数组的内部指针指向最后一个单元
extract //从数组中将变量导入到当前的符号表(其键名作为变量的名，键值作为变量的值)
in_array //检查数组中是否存在某个值
key //从关联数组中取得键名
krsort //对数组按照键名逆向排序
ksort //对数组按照键名排序
list //把数组中的值赋给一些变量，
next //将数组中的内部指针向前移动一位
current //返回数组当前单元
reset //将数组的内部指针指向第一个单元
sort //对数组排序---SORT_REGULAR - 正常比较单元（不改变类型）,SORT_NUMERIC - 单元被作为数字来比较,单元被作为字符串来比较,根据当前的区域（locale）设置来把单元当作字符串比较
时间日期行数
date
gmdate
gmmktime
microtime
time
文件系统函数
basename
chmod
copy
delete/unlink
dirname
fopen/flock/fread/fwrite/fclose
file_exists
file_get_contents
file_put_contents
file
fileatime
filemtime
filesize
ftruncate
is_dir
is_file
is_readable
is_uploaded_file
is_writable
mkdir
move_uploaded_file
rename
rmdir
touch
unlink
数学函数
abs
ceil
floor
max
min
Mysql函数
mysql_connect/mysql_pconnect
mysql_error
mysql_errno
mysql_fetch_array
mysql_fetch_field
mysql_fetch_row
mysql_insert_id
mysql_query
字符串处理函数
addslashes
echo
explode
join
md5
print
//sprintf
str_replace
strstr
strip_tags
stripslashes
strlen
strpos
strtolower
strtouper
substr
trim
URL函数库
base64_decode
base64_encode
rawurldecode
rawurlencode
urldecode
urlencode
变量函数
empty
floatval
get_defined_vars
gettype
intval
is_array
is_bool
is_float
is_int
is_null
is_numeric
is_object
is_resource
is_string
isset
print_r
settype
strval
unset
var_dump
php.ini
short_open_tag on
asp_tags off
disable_functions
display_errors on
track_errors on
register_globals off
post_max_size
extension_dir = "./ext"
enable_dl off
extension=php_gd2.dll
extension=php_mbstring.dll
extension=php_mysql.dll
转载自：http://hi.baidu.com/xixer/blog/item/7d320b94f24d2d18d21b70c7.html
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