is_numeric in action : Data Type : Language Basics PHP Source Code
Ajax
Ajax Examples
Ajax Tutorials
Scripts and Programs
Javascript
Javascript Examples Tutorials
DHTML Tutorials
Javascript References
Scripts and Programs
HTML
HTML Tutorials
HTML References
HTML DOM 0 References
HTML DOM 2 References
CSS
CSS Tutorials
CSS References
PHP
PHP Source Code
PHP References
Scripts and Programs
C#
C# Source Code
C# Examples
PHP Source Code
»
Language Basics
»
Data Type
»
is_numeric in action
<?php
$item =
43
;
echo
"The variable $item is numeric: "
.is_numeric
(
$item
)
.
"<br />"
;
?>
HTML code for linking to this page:
Related in same category :
gettype() and settype() Data Types
Returns true if $a is an array
Returns true if $a is a floating-point number
Returns true if $a is an integer
Create Object and check its type
Create Object and get its type
Returns true if $a is a string
PHP Function Reference -> Users Code Examples / Notes - > Data Type:
Types
From other types
Pseudo-types and variables used in this documentation
Type Juggling
Type Casting
Determining variable types
Type Operators
Type Hinting
Database Security
Designing Databases
Connecting to Database
User Submitted Data
Persistent Database Connections
com_load_typelib
com_print_typeinfo
variant_get_type
variant_set_type
Character Type Functions
ctype_alnum
ctype_alpha
ctype_cntrl
ctype_digit
ctype_graph
ctype_lower
ctype_print
ctype_punct
ctype_space
ctype_upper
ctype_xdigit
Database (dbm-style) Abstraction Layer Functions
DOMCharacterData->appendData()
DOMCharacterData->deleteData()
DOMCharacterData->insertData()
DOMCharacterData->replaceData()
DOMCharacterData->substringData()
DOMDocument->createCDATASection()
DOMImplementation->createDocumentType()
DomDocument->create_cdata_section
DomDocument->doctype
DomDocumentType->entities()
DomDocumentType->internal_subset()
DomDocumentType->name()
DomDocumentType->notations()
DomDocumentType->public_id()
DomDocumentType->system_id()
DomNode->node_type
DomProcessingInstruction->data
exif_imagetype
exif_read_data
read_exif_data
Forms Data Format Functions
filepro_fieldtype
filetype
fbsql_data_seek
fbsql_database_password
fbsql_database
fbsql_field_type
ftp_systype
geoip_database_info
HaruDoc::loadType1
HaruEncoder::getByteType
HaruEncoder::getType
HttpMessage::toMessageTypeObject
HttpMessage::guessContentType
HttpMessage::getType
HttpMessage::setType
HttpRequest::addPutData
HttpRequest::addQueryData
HttpRequest::addRawPostData
HttpRequest::getContentType
HttpRequest::getPutData
HttpRequest::getQueryData
HttpRequest::getRawPostData
HttpRequest::getResponseData
HttpRequest::setContentType
HttpRequest::setPutData
HttpRequest::setQueryData
HttpRequest::setRawPostData
HttpResponse::getContentType
HttpResponse::getData
HttpResponse::guessContentType
HttpResponse::setContentType
HttpResponse::setData
http_negotiate_content_type
http_post_data
http_put_data
http_send_content_type
http_send_data
hw_api_content->mimetype
hw_api_reason->type
db2_cursor_type
db2_field_type
image_type_to_extension
image_type_to_mime_type
imagetypes
Imagick::getImageType
Imagick::setImageType
Imagick::setType
ifx_fieldtypes
ingres_field_type
mailparse_msg_get_part_data
maxdb_close_long_data
maxdb_data_seek
maxdb_get_metadata
maxdb_rpl_query_type
maxdb_send_long_data
maxdb_stmt_close_long_data
maxdb_stmt_data_seek
maxdb_stmt_result_metadata
maxdb_stmt_send_long_data
Mimetype Functions
mime_content_type
udm_free_ispell_data
udm_load_ispell_data
mssql_data_seek
mssql_field_type
msession_get_data
msession_set_data
msql_data_seek
msql_field_type
msql_fieldtype
mysql_data_seek
mysql_field_type
mysqli_data_seek
mysqli_get_metadata
mysqli_rpl_query_type
mysqli_send_long_data
mysqli_stmt_data_seek
mysqli_stmt_result_metadata
mysqli_stmt_send_long_data
ncurses_typeahead
newt_listbox_set_data
newt_listitem_get_data
oci_field_type_raw
oci_field_type
oci_statement_type
ocicolumntype
ocicolumntyperaw
ocistatementtype
odbc_data_source
odbc_field_type
odbc_gettypeinfo
openal_buffer_data
ora_columntype
ovrimos_field_type
PDF_load_3ddata
Phar->getMetaData
Phar->setMetaData
PharFileInfo->getMetaData
PharFileInfo->setMetaData
pg_field_type_oid
pg_field_type
pg_meta_data
pspell_config_data_dir
SCA_LocalProxy::createDataObject
SCA_SoapProxy::createDataObject
SCA::createDataObject
SDO_DAS_ChangeSummary::getChangeType
SDO_DAS_ChangeSummary::getChangedDataObjects
SDO_DAS_DataFactory::addPropertyToType
SDO_DAS_DataFactory::addType
SDO_DAS_DataFactory::getDataFactory
SDO_DAS_DataObject::getChangeSummary
SDO_DataFactory::create
SDO_DataObject::clear
SDO_DataObject::createDataObject
SDO_DataObject::getContainer
SDO_DataObject::getSequence
SDO_DataObject::getTypeName
SDO_DataObject::getTypeNamespaceURI
SDO_Model_Property::getContainingType
SDO_Model_Property::getType
SDO_Model_ReflectionDataObject::__construct
SDO_Model_ReflectionDataObject::export
SDO_Model_ReflectionDataObject::getContainmentProperty
SDO_Model_ReflectionDataObject::getInstanceProperties
SDO_Model_ReflectionDataObject::getType
SDO_Model_Type::getBaseType
SDO_Model_Type::getName
SDO_Model_Type::getNamespaceURI
SDO_Model_Type::getProperties
SDO_Model_Type::getProperty
SDO_Model_Type::isAbstractType
SDO_Model_Type::isDataType
SDO_Model_Type::isInstance
SDO_Model_Type::isOpenType
SDO_Model_Type::isSequencedType
SDO XML Data Access Service Functions
SDO_DAS_XML_Document::getRootDataObject
SDO_DAS_XML::addTypes
SDO_DAS_XML::createDataObject
SDO Relational Data Access Service Functions
SDO_DAS_Relational::createRootDataObject
SESAM Database Functions
SoapClient->__getTypes()
DirectoryIterator::getType
sqlite_fetch_column_types
stream_get_meta_data
sybase_data_seek
get_resource_type
gettype
settype
w32api_deftype
w32api_init_dtype
xml_set_character_data_handler
xmlrpc_get_type
xmlrpc_server_add_introspection_data
xmlrpc_set_type
XMLWriter::endCData
XMLWriter::startCData
XMLWriter::writeCData
yaz_database
zlib_get_coding_type
Changes in database support
Databases
Expression types
Data Handling
Variable and Type Related Extensions
Database Extensions
Vendor Specific Database Extensions
Raw POST data: $HTTP_RAW_POST_DATA
List of Resource Types
Data (RFC 2397)
PHP type comparison tables
PHP Source Code
Language Basics
»
Data Type
Arithmetic Operators
Assign Operator
Binary Number
Bitwise Operators
Boolean
Break
Char
Comments
Constant
Continue
Data Type Convert
Data Type
Define Constant
Do While
Double
Equality Operators
Exit
For Each
For
Global
GLOBALS
Hexadecimal Number
If
Include
Integer
Logic Operators
Modulus
Octal Number
Operator Precedence
Php Tag
PNG
Polygon
Postfix Prefix Operators
Pre Defined Constant
Reference
Relational Operators
Shorthand Operators
Static
Switch
Trinary Operator
Variable Cast
Variable Scope
Variable Set Unset
Variable Type
While
Chart
Class
COM and .Net (Windows)
Components
Cookie Session
Data Structure
Databases
Design Patterns
Development
Email
File Directory
Form
Functions
Graphics Image
HTML
Language Basics
Login Authentication
Math
MySQL Database
Network
String
Web Services SOAP WSDL
XML