List of Function Aliases

There are quite a few functions in PHP which you can call with more than one name. In some cases there is no preferred name among the multiple ones, is_int() and is_integer() are equally good for example. However there are functions which changed names because of an API cleanup or some other reason and the old names are only kept as aliases for backward compatibility. It is usually a bad idea to use these kind of aliases, as they may be bound to obsolescence or renaming, which will lead to unportable script. This list is provided to help those who want to upgrade their old scripts to newer syntax.

**Aliases**
Alias	Master function	Extension used
_	gettext()	Gettext
chop	rtrim()	Base syntax
close	closedir()	Base syntax
com_get	com_propget()	COM
com_propset	com_propput()	COM
com_set	com_propput()	COM
die	exit()	Miscellaneous functions
diskfreespace	disk_free_space()	Filesystem
doubleval	floatval()	Base syntax
fputs	fwrite()	Base syntax
gzputs	gzwrite()	Zlib
i18n_convert	mb_convert_encoding()	Multi-bytes Strings
i18n_discover_encoding	mb_detect_encoding()	Multi-bytes Strings
i18n_http_input	mb_http_input()	Multi-bytes Strings
i18n_http_output	mb_http_output()	Multi-bytes Strings
i18n_internal_encoding	mb_internal_encoding()	Multi-bytes Strings
i18n_ja_jp_hantozen	mb_convert_kana()	Multi-bytes Strings
i18n_mime_header_decode	mb_decode_mimeheader()	Multi-bytes Strings
i18n_mime_header_encode	mb_encode_mimeheader()	Multi-bytes Strings
imap_create	imap_createmailbox()	IMAP
imap_fetchtext	imap_body()	IMAP
imap_getmailboxes	imap_list_full()	IMAP
imap_getsubscribed	imap_lsub_full()	IMAP
imap_header	imap_headerinfo()	IMAP
imap_listmailbox	imap_list()	IMAP
imap_listsubscribed	imap_lsub()	IMAP
imap_rename	imap_renamemailbox()	IMAP
imap_scan	imap_listscan()	IMAP
imap_scanmailbox	imap_listscan()	IMAP
ini_alter	ini_set()	Base syntax
is_double	is_float()	Base syntax
is_integer	is_int()	Base syntax
is_long	is_int()	Base syntax
is_real	is_float()	Base syntax
is_writeable	is_writable()	Base syntax
join	implode()	Base syntax
key_exists	array_key_exists()	Base syntax
ldap_close	ldap_unbind()	LDAP
mbstrcut	mb_strcut()	Multi-bytes Strings
mbstrlen	mb_strlen()	Multi-bytes Strings
mbstrpos	mb_strpos()	Multi-bytes Strings
mbstrrpos	mb_strrpos()	Multi-bytes Strings
mbsubstr	mb_substr()	Multi-bytes Strings
mysql	mysql_db_query()	MySQL
mysql_createdb	mysql_create_db()	MySQL
mysql_db_name	mysql_result()	MySQL
mysql_dbname	mysql_result()	MySQL
mysql_dropdb	mysql_drop_db()	MySQL
mysql_fieldflags	mysql_field_flags()	MySQL
mysql_fieldlen	mysql_field_len()	MySQL
mysql_fieldname	mysql_field_name()	MySQL
mysql_fieldtable	mysql_field_table()	MySQL
mysql_fieldtype	mysql_field_type()	MySQL
mysql_freeresult	mysql_free_result()	MySQL
mysql_listdbs	mysql_list_dbs()	MySQL
mysql_listfields	mysql_list_fields()	MySQL
mysql_listtables	mysql_list_tables()	MySQL
mysql_numfields	mysql_num_fields()	MySQL
mysql_numrows	mysql_num_rows()	MySQL
mysql_selectdb	mysql_select_db()	MySQL
mysql_tablename	mysql_result()	MySQL
ociassignelem	OCICollection::assignElem	OCI8
ocibindbyname	oci_bind_by_name()	OCI8
ocicancel	oci_cancel()	OCI8
ocicloselob	OCILob::close	OCI8
ocicollappend	OCICollection::append	OCI8
ocicollassign	OCICollection::assign	OCI8
ocicollmax	OCICollection::max	OCI8
ocicollsize	OCICollection::size	OCI8
ocicolltrim	OCICollection::trim	OCI8
ocicolumnisnull	oci_field_is_null()	OCI8
ocicolumnname	oci_field_name()	OCI8
ocicolumnprecision	oci_field_precision()	OCI8
ocicolumnscale	oci_field_scale()	OCI8
ocicolumnsize	oci_field_size()	OCI8
ocicolumntype	oci_field_type()	OCI8
ocicolumntyperaw	oci_field_type_raw()	OCI8
ocicommit	oci_commit()	OCI8
ocidefinebyname	oci_define_by_name()	OCI8
ocierror	oci_error()	OCI8
ociexecute	oci_execute()	OCI8
ocifetch	oci_fetch()	OCI8
ocifetchinto	oci_fetch_array(), oci_fetch_row(), oci_fetch_assoc(), oci_fetch_object()	OCI8
ocifetchstatement	oci_fetch_all()	OCI8
ocifreecollection	OCICollection::free	OCI8
ocifreecursor	oci_free_statement()	OCI8
ocifreedesc	oci_free_descriptor()	OCI8
ocifreestatement	oci_free_statement()	OCI8
ocigetelem	OCICollection::getElem	OCI8
ociinternaldebug	oci_internal_debug()	OCI8
ociloadlob	OCILob::load	OCI8
ocilogon	oci_connect()	OCI8
ocinewcollection	oci_new_collection()	OCI8
ocinewcursor	oci_new_cursor()	OCI8
ocinewdescriptor	oci_new_descriptor()	OCI8
ocinlogon	oci_new_connect()	OCI8
ocinumcols	oci_num_fields()	OCI8
ociparse	oci_parse()	OCI8
ocipasswordchange	oci_password_change()	OCI8
ociplogon	oci_pconnect()	OCI8
ociresult	oci_result()	OCI8
ocirollback	oci_rollback()	OCI8
ocisavelob	OCILob::save	OCI8
ocisavelobfile	OCILob::import	OCI8
ociserverversion	oci_server_version()	OCI8
ocisetprefetch	oci_set_prefetch()	OCI8
ocistatementtype	oci_statement_type()	OCI8
ociwritelobtofile	OCILob::export	OCI8
ociwritetemporarylob	OCILob::writeTemporary	OCI8
odbc_do	odbc_exec()	ODBC
odbc_field_precision	odbc_field_len()	ODBC
pg_clientencoding	pg_client_encoding()	PostgreSQL
pg_setclientencoding	pg_set_client_encoding()	PostgreSQL
pos	current()	Base syntax
recode	recode_string()	Recode
show_source	highlight_file()	Base syntax
sizeof	count()	Base syntax
snmpwalkoid	snmprealwalk()	SNMP
strchr	strstr()	Base syntax
xptr_new_context	xpath_new_context()