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pg_field_type

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

pg_field_type — 返回相应字段的类型名称

说明

pg_field_type ( resource $result , int $field_number ) : string

pg_field_type() 以字符串返回 PostgreSQL result 资源中指定 field_number 字段的类型。字段编号从 0 开始。

参考 pg_field_name() 页面中的例子。

Note:
本函数以前的名字为 pg_fieldtype()。

参见 pg_field_prtlen() 和 pg_field_name()。

User Contributed Notes

Joshua Burns 01-Mar-2013 10:29


Here is an updated list of nearly every PostgreSQL data type, and PHP's internal C-type equivalent, updated for PostgreSQL 9.2. The first array maps PHP's internal data type to PostgreSQL's equivalents. The second maps PostgreSQL's data-types to PHP's equivalents.



<?php



$php_to_pg = array(

    'bit' => array('bit'),

    'bool' => array('boolean'),

    'box' => array('box'),

    'bpchar' => array('character','char'),

    'bytea' => array('bytea'),

    'cidr' => array('cidr'),

    'circle' => array('circle'),

    'date' => array('date'),

    'daterange' => array('daterange'),

    'float4' => array('real'),

    'float8' => array('double precision'),

    'inet' => array('inet'),

    'int2' => array('smallint', 'smallserial'),

    'int4' => array('integer', 'serial'),

    'int4range' => array('int4range'),

    'int8' => array('bigint', 'bigserial'),

    'int8range' => array('int8range'),

    'interval' => array('interval'),

    'json' => array('json'),

    'lseg' => array('lseg'),

    'macaddr' => array('macaddr'),

    'money' => array('money'),

    'numeric' => array('decimal', 'numeric'),

    'numrange' => array('numrange'),

    'path' => array('path'),

    'point' => array('point'),

    'polygon' => array('polygon'),

    'text' => array('text'),

    'time' => array('time', 'time without time zone'),

    'timestamp' => array('timestamp', 'timestamp without time zone'),

    'timestamptz' => array('timestamp with time zone'),

    'timetz' => array('time with time zone'),

    'tsquery' => array('tsquery'),

    'tsrange' => array('tsrange'),

    'tsvector' => array('tsvector'),

    'uuid' => array('uuid'),

    'varbit' => array('bit varying'),

    'varchar' => array('character varying', 'varchar'),

    'xml' => array('xml'),

);



$pg_to_php = array(

    'bit' => 'bit',

    'boolean' => 'bool',

    'box' => 'box',

    'character' => 'bpchar',

    'char' => 'bpchar',

    'bytea' => 'bytea',

    'cidr' => 'cidr',

    'circle' => 'circle',

    'date' => 'date',

    'daterange' => 'daterange',

    'real' => 'float4',

    'double precision' => 'float8',

    'inet' => 'inet',

    'smallint' => 'int2',

    'smallserial' => 'int2',

    'integer' => 'int4',

    'serial' => 'int4',

    'int4range' => 'int4range',

    'bigint' => 'int8',

    'bigserial' => 'int8',

    'int8range' => 'int8range',

    'interval' => 'interval',

    'json' => 'json',

    'lseg' => 'lseg',

    'macaddr' => 'macaddr',

    'money' => 'money',

    'decimal' => 'numeric',

    'numeric' => 'numeric',

    'numrange' => 'numrange',

    'path' => 'path',

    'point' => 'point',

    'polygon' => 'polygon',

    'text' => 'text',

    'time' => 'time',

    'time without time zone' => 'time',

    'timestamp' => 'timestamp',

    'timestamp without time zone' => 'timestamp',

    'timestamp with time zone' => 'timestamptz',

    'time with time zone' => 'timetz',

    'tsquery' => 'tsquery',

    'tsrange' => 'tsrange',

    'tstzrange' => 'tstzrange',

    'tsvector' => 'tsvector',

    'uuid' => 'uuid',

    'bit varying' => 'varbit',

    'character varying' => 'varchar',

    'varchar' => 'varchar',

    'xml' => 'xml'

);



?>

Anonymous 16-Jan-2010 07:18


Also be aware that postgreSQL array fields will prefix the type name with an underscore (e.g. "_int4" or "_text"), while composite a.k.a. row-type fields will return type "record".

marxarelli 02-Jan-2006 02:34


Because complete documentation is always helpful, here are all the PostgreSQL general purpose types as they are listed in the 8.1 documentation, and each corresponding string returned by pg_field_type().



bigint => int8

bigserial => int8

bit => bit

bit varying => varbit

boolean => bool

box => box

bytea => bytea

character varying => varchar

character => bpchar

cidr => cidr

circle => circle

date => date

double precision => float8

inet => inet

integer => int4

interval => interval

line => line

lseg => lseg

macaddr => macaddr

money => money

numeric => numeric

path => path

point => point

polygon => polygon

real => float4

smallint => int2

serial => int4

text => text

time => time

time with time zone => timetz

timestamp => timestamp

timestamp with time zone => timestamptz



And for the record... (note the 7.4 client lib)

# postmaster --version

postmaster (PostgreSQL) 8.0.4



# ldd libphp4.so

...

libpq.so.3 => /usr/lib/libpq.so.3 (0xb7ac8000)

...

andy at a 2 h d dot com 03-May-2003 12:09


The types returned are:

  bool

  int2 (smallint)

  int4

  int8 (bigint)

  numeric

  float4 (real / float)

  float8 (double)

  timestamp

  date

  time

  varchar

  bpchar (fixed leng string, 'blank padded char')

  inet (ip address)

  money



There are some other more esoteric types, e.g. 'circle', but these are the most common.

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pg_field_type

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