Codeigniter Path Helper -This helper contains function that returns a server path without symbolic links or related directory structures. An optional second argument will cause an error to be triggered if the path cannot be resolved. $this->load->helper(‘path’); is used to load the helper. The path helper file contains functions that authorize you to work with file paths on the server. Here in this tutorial we are going to explain how to use path helper in codeigniter.

Codeigniter path helper example

Let us first see how to load path helper in codeigniter and then use its function-

Load path helper

 
$this->load->helper('path');

Functions:-

The following functions are available in path helper.

Absolute path OR real path

Syntax of absolute path function is

Syntax of absolute path function is:-

set_realpath($path[$check_existance = FALSE])

Parameters:

• $path (string) : Path
• $check_existance (bool) : Whether to check if the path actually exists
• Returns : An absolute path
• Return type : String

EXAMPLE

Here is simple example of absolute path OR real path.

Absolute path OR real path in codeigniter example:-

//Controllers part public function checkPath() { $this->load->helper('path'); $this->load->view('checkPath_view'); } // Views parts

The output of the above example will be something like this –

Codeigniter Language Helper– This function returns a line of text from a loaded language file with simplified syntax that may be more desirable for view files than calling. $this->load->helper(‘language’); is used to load the helper. The optional second parameter will also output a form label for you. The language helper file contains functions that assist in working with language files. Here in this tutorial, we are going to explain how to use this helper with the example.

Codeigniter language helper example

Now we will see how to load language helper in codeigniter and then use its function-

Load language helper

How to load language helper in codeingniter example:

 
$this->load->helper('language');

Available functions:-

Following functions are available in language helper.

Language line

Syntax of language line function

lang($line[$for = ''[$attributes = array()]])		

Parameters:

• $line (string) : Language line key
• $for (string) : HTML “for” attribute (ID of the element we’re creating a label for)
• $attributes (array) : Any additional HTML attributes
• Returns : The language line; in an HTML label tag, if the $for parameter is not empty
• Return type : string

EXAMPLE

Here is simple example of language line tags.

The output of the above example will be something like this –

Codeigniter Number Helper – Codeigniter number helper provide various functions that are used to display the formats number in a bytes. $this->load->helper(‘number’);is used to load the helper. This contains formats numbers as bytes, based on size, and adds the appropriate suffix. Here in this tutorial, we are going to explain how to use this helper with the example.

Codeigniter number helper example

Now we will see how to load number helper in codeigniter and then use its function-

Load number helper

 
$this->load->helper('number');

Available functions:-

Following functions are available in number helper.

Byte format

Syntax of byte format function

byte_format($num[$precision = 1])

Parameters:

• $num (mixed) : Number of bytes
• $precision (int) : Floating point precision
• Returns : Formatted data size string
• Return type : string

EXAMPLE

Here is simple example of number helper tags.

Number Helper Example
 

 



 

 


 

The output of the above example will be something like this –

Codeigniter Inflector Helper – Codeigniter inflector helper provide various functions that are used to convert english word to inflector case. $this->load->helper(‘inflector’);is used to load the helper. This contains functions that permit you to change english words to plural, singular, camel case etc. Here in this tutorial, we are going to explain how to this helper with the example.

Codeigniter inflector helper example

Now we will see how to load inflector helper in codeigniter and then use its function-

Load email helper

 
$this->load->helper('Inflector');

Functions:-

Following functions are available in inflector helper.

• 1. Singular Function
• 2. Plural Function
• 3. Camelize Function
• 4. Underscore Function
• 5. Humanize Function
• 6. is_countable Function

1. Singular function

Singular function is used to change a plural word to singular

singular($str)		

Parameters:

• $str (string) : Input string
• Returns : A singular word
• Return type : string

EXAMPLE

Here is simple example of inflector tags.

//Controllers part
public function inflect()
	{
		$this->load->helper('Inflector ');
		$this->load->view('view_page');
	}

// Views parts
plural to singular

The output of the above example will be something like this –

2. Plural function

Plural function is used to change a singular word to plural

plural($str)		

Parameters:

• $str (string) : Input string
• Returns : A plural word
• Return type : string

EXAMPLE

Here is simple example of plural inflector tags.

// Views parts
Singular to Plural 

The output of the above example will be something like this –

3. Camelized function

Camelized function is used to change a words separated by spaces or underscores to camel case

camelize($str)		

Parameters:

• $str (string) : Input string
• Returns : Camelized string
• Return type : string

EXAMPLE

Here is simple example of camelized inflector tags.

// Views parts
Camelized function

The output of the above example will be something like this –

4. UnderScore function

Underscore function is used to take multiple words separated by spaces and underscores them

underscore($str)		

Parameters:

• $str (string) : Input string
• Returns : String containing underscores instead of spaces
• Return type : string

EXAMPLE

Here is simple example of underscore inflector Tags.

// Views parts
UnderScore function

The output of the above example will be something like this –

5. Humanized function

Humanized function is used to take multiple words separated by underscores and adds spaces between them. Each word is capitalized

humanize($str[$separator = '_'])		

Parameters:

• $str (string) : Input string
• $separator (string) : Input separator
• Returns : Humanized string
• Return type : string

EXAMPLE

Here is simple example of humanized inflector tags.

// Views parts
Humanized  function

The output of the above example will be something like this –

6. Countable function

Countable function is used to print output in boolean data type

is_countable($word)		

Parameters:

• $word (string) : Input string
• Returns : TRUE if the word is countable or FALSE if not
• Return type : bool

EXAMPLE

Here is simple example of countable inflector tags.

// Views parts
Countable function

The output of the above example will be something like this –

Codeigniter Html Helper – Codeigniter html helper provides various functions which is used to create Heading , image, Link and List Tags. $this->load->helper(‘html’); is used to load the helper. The html helper file contains functions that assist in working with html. Here in this tutorial we are going to explain how to use html helper in codeigniter.

Codeigniter html helper example

Let us first see how to load html helper in codeigniter and then use its function-

Load html helper

 
$this->load->helper('html');

Functions:-

There are many functions are available in html helper. Now we will explain one by one with example.

• 1. HTML heading tag
• 2. HTML image tag
• 3. HTML link tag
• 4. HTML list tag
• 5. HTML line break tag
• 6. HTML Non Breaking space tag

1. HTML heading tag

Syntax of heading tags function is

heading([$data = ''[$h = '1'[$attributes = '']]])		

EXAMPLE

Here is simple example of html heading tags.

//Controllers part
public function heading()
	{
		$this->load->helper('html');
		$this->load->view('heading_view');
	}

// Views parts


 'mycustomclass','style' => 'color: red;');?>

 'question', 'class' => 'green', 'style' => 'color:green'));?>

The output of the above example will be something like this –

2. Html image tag

Syntax of image Tags function is

img([$src = ''[$index_page = FALSE[$attributes = '']]])		

EXAMPLE

Here is simple example of html image tags.

// Views parts
//
//
Image Location
 'uploads/Desert.jpg',
        'alt'   => 'Me, demonstrating how to eat 4 slices of pizza at one time',
        'class' => 'post_images',
        'width' => '200',
        'height'=> '200',
        'title' => 'That was quite a night',
        'rel'   => 'lightbox');?>

The output of the above example will be something like this –

3. Html link tag

Syntax of link tags function is

link_tag([$href = ''[$rel = 'stylesheet'[$type = 'text/css'[$title = ''[$media = ''[$index_page = FALSE]]]]]])		

EXAMPLE

Here is simple example of html link tags. Which is used to connect external css and javascript file.

// Views parts
 'css file path',
        'rel'   => 'stylesheet',
        'type'  => 'text/css',
        'media' => 'text'
);?>
Welcome To Solid Coupon

The output of the above example will be something like this –

3. Html list tag

There are two types Of list tags
1. Unordered list.
2. Ordered list.

ul($list[$attributes = ''])
ol($list, $attributes = '')		

EXAMPLE

Here is simple example of html list tags.

// Views parts
// Unordered List
 Unordered List
 array('red','blue','green'),
'shapes'  => array('round','square','circles' => array(
'ellipse','oval','sphere')),);?>
 'boldlist','id' => 'mylist','style' => 'color: green;');?>

// Ordered List

 'boldlist','id' => 'mylist','style' => 'color: red;');?>

The output of the above example will be something like this –

3. Html line break tag

Syntax of line break tags is:-

br([$count = 1])		

EXAMPLE

Here is simple example of html line break tags.

// Views parts
echo br(3);

This Tag will produce three times break in code section like this-

3. Html non breaking space tag

Syntax of non breaking space tag is:-

nbs([$num = 1])		

EXAMPLE

Here is simple example of html non breaking space tag.

// Views parts
echo nbs(3);

This Tag will produce three times non-breaking spaces ( )in Single Line Code like this-

Codeigniter Form Helper – Codeigniter Form helper provides various functions that are used to create the form $this->load->helper(‘form’); is used to load the helper. The Form Helper file contains functions that assist in working with forms. Here in this tutorial, we are going to explain how to create a form in CodeIgniter.

Codeigniter Form Helper Example

Now we will see how to load form helper in codeigniter and then use its function-

Load Form Helper

 
$this->load->helper('form');

Functions:-

There are many functions are available in Form helper. Now we will explain one by one with example.

1. Form Open and Adding Attributes

Syntax of form_open and Adding Attributes function is

form_open([$action = ''[$attributes = ''[ $hidden = array()]]])
$attributes = array('class' => 'email', 'id' => 'myform');
echo form_open('email/send', $attributes);		

2. Form Hidden

Syntax of form_hidden function is

form_hidden($name[$value = ''])		

3. Form Input

Syntax of form_input function is

form_input([$data = ''[$value = ''[ $extra = '']]])
form_password([$data = ''[$value = ''[ $extra = '']]])
form_upload([$data = ''[$value = ''[$extra = '']]])
form_textarea([$data = ''[, $value = ''[, $extra = '']]])		

4. Form DropDown

Syntax of form_dropdown function is

form_dropdown([$name = ''[$options = array()[$selected = array()[$extra = '']]]])		

5. Form Fieldset

Syntax of form_fieldset function is

form_fieldset([$legend_text = ''[$attributes = array()]])
form_fieldset_close([$extra = ''])		

6. Form Checkbox and Radio Button

Syntax of form_checkbox and radiobutton function is

form_checkbox([$data = ''[$value = ''[$checked = FALSE[$extra = '']]]])
form_radio([$data = ''[$value = ''[$checked = FALSE[$extra = '']]]])		

7. Form Label

Syntax of form_label function is

form_label([$label_text = ''[, $id = ''[, $attributes = array()]]])		

8. Form Submit , Reset and Button

Syntax of form_submit , Reset and button function is

form_submit([$data = ''[$value = ''[$extra = '']]])	
form_reset([$data = ''[$value = ''[$extra = '']]])
form_button([$data = ''[$content = ''[$extra = '']]])	

9. Form Close

Syntax of form_close function is

form_close([$extra = ''])	

10. Form Error

Syntax of form_error function is

form_error([$field = ''[, $prefix = ''[, $suffix = '']]])	

11. Form Validate Error

Syntax of validation_errors function is

validation_errors([$prefix = ''[, $suffix = '']])	

EXAMPLE 1

Here is simple example to Form Open and Adding Attributes.

controllers
public function form()
	{
		$this->load->helper('form');
		$this->load->view('form_view');	
	}
views part:-
$attributes = array('class' => 'email', 'id' => 'myform');
echo form_open('email/send', $attributes);

EXAMPLE 2

Here is simple example to Form Hidden.

views part
$data = array(
        'name'  => 'John Doe',
        'email' => 'john@example.com',
        'url'   => 'http://example.com'
);

echo form_hidden($data);

EXAMPLE 3

Here is simple example to Form Input.

views part
echo form_label('User Name :');
$input = array('name'=>'username','id'=>'username','value'=>'johndoe',
'maxlength'=>'100','size'=>'50','style'=>'width:50%');
echo form_input($input);

echo form_label('Password :');
$password = array('name'=>'passowrd','id'=>'password','type'=>'password',
'maxlength'=>'100','size'=>'50','style'=>'width:50%');
echo form_password($password);

echo form_label('File Upload :');
$upload = array('name'=>'upload','id'=>'upload','type'=>'file');
echo form_open_multipart($upload);

echo form_label('TextArea :');
 $text_area= array('name'=>'txt_area','id'=>'txt_area','value'=>'johndoe',
 'rows'=>'5','cols'=>'10','style'=>'width:50%');
 echo form_textarea($text_area);

EXAMPLE 4

Here is simple example to Form DropDown.

views part
$options = array(
        'Cse'         => 'Computer Science Engineering',
        'Ece'           => 'Electronics engg',
        'Mech'         => 'Mechanical Engg',
        'EEE'        => 'Electrical Engg',
);
echo form_dropdown('Course', $options);

EXAMPLE 5

Here is simple example to Form Fieldset.

views part
$field_set = array(
        'id'    => 'address_info',
        'class' => 'address_info'
);

echo form_fieldset('Address Information', $field_set );
echo "
fieldset content here
\n";
echo form_fieldset_close();

EXAMPLE 6

Here is simple example to Form Checkbox and Radiobutton.

views part
Check box
echo form_label('course :');
echo form_label('php :');
$data = array('name'=>'course','id'=>'php','value'=>'accept',
'checked'=>false,'style'=>'margin:10px');
echo form_checkbox($data);
echo form_label('java :')?>
$data = array('name'=>'course','id'=>'java','value'=>'accept',
'checked'=> false,'style'=>'margin:10px');
echo form_checkbox($data);

Radio Button

$male=array('id'=>'2','name'=>'gen');
$female=array('id'=>'3','name'=>'gen');
echo "Gender : "." ".form_radio($male)."Male".form_radio($female)."Female"."
";

EXAMPLE 7

Here is simple example to Form Label.

views part
$attributes = array(
        'class' => 'mycustomclass',
        'style' => 'color: red;'
);
echo form_label('What is your Name', 'username', $attributes);

EXAMPLE 8

Here is simple example to Form Submit and Reset Button.

views part
$data = array('name'=>'submit','id'=>'submit','value'=>'submit',
'type'=>'submit','content'=>'submit post');
echo form_submit($data);

$data = array('name'=>'button','id'=>'button','value'=>'true',
'type'=>'reset','content'=>'Reset');
echo form_reset($data);

EXAMPLE 9

Here is simple example to Form close.

views part
$string = '';
echo form_close($string);

EXAMPLE 10

Here is simple example to Form Error.

views part
echo form_error('myfield', '
', '
');

EXAMPLE 11

Here is simple example to Form validate Error.

views part
echo validation_errors('', '');

Complete Example To Create Contact Form Using CodeIgniter

Controllers part
public function form()
	{
		$this->load->helper('form');
		$this->load->view('form_view');
	}

Views part



 'name', 'name' => 'name')); ?>




 'email', 'name' => 'email', 'value'=>'sonukr321@gmail.com')); ?>




'passowrd','id'=>'password','type'=>'password',
'maxlength'=>'11');?>






 'mobile', 'name' => 'mobile')); ?>




'Computer Science Engineering','Ece'=>'Electronics engg','Mech'=>'Mechanical Engg','EEE'=>'Electrical Engg')); ?>






'course','id'=>'php','value'=>'accept',
'checked'=>false,'style'=>'margin:10px');?>





'course','id'=>'java','value'=>'accept',
'checked'=> false,'style'=>'margin:10px');?>





'course','id'=>'.Net','value'=>'accept',
'checked'=> false,'style'=>'margin:10px');?>





'2','name'=>'gen');?>
'3','name'=>'gen');?>
Gender : "." ".form_radio($male)."Male".form_radio($female)."Female"."
";?>






 'address', 'name' => 'address')); ?>


 'submit', 'value' => 'Submit')); ?>

'button','id'=>'button','value'=>'true',
'type'=>'reset','content'=>'Reset');?>

The output of the above example will be something like this –

Codeigniter File Helper – Codeigniter file helper provides various functions which is used to access the file. $this->load->helper(‘file’); is used to load the helper. This contains the functions – read_file , write_file and delete_files. Here in this tutorial we are going to explain how to read , write and delete files in codeigniter.

Codeigniter File Helper Example

Now we will see how to load file helper in codeigniter and then use its function-

Load file Helper

 
$this->load->helper('file');

Functions:-

Following functions are available in file helper.

• 1. Read File
• 2. Write File
• 3. Delete File

1. Read_File

Syntax of Read_File function is

read_file($fileName)		

2. write_file

Syntax of Write_File function is

write_file($path, $data[, $mode = 'wb'])		

2. Delete_files

Syntax of Delete_Files function is

delete_files($path[, $del_dir = FALSE[, $htdocs = FALSE]])		

EXAMPLE 1

Here is simple example of Read File.

public function readfiles()
{
    $this->load->helper('file');
    $path = 'http://localhost/CodeIgniter/media/write.txt';
    $string = read_file($path);
    echo $string;	
}

EXAMPLE 2

Here is simple example of Write File.

public function writefiles()
{
   $this->load->helper('file');
   $path = 'http://localhost/CodeIgniter/media/new.txt';
   $data = 'Good Morning Friends';
   if ( ! write_file($path, $data))
      {
        echo 'Unable to write';
      }
   else
      {
        echo 'File written!';
      }
}

EXAMPLE 3

Here is simple example of Delete Files.

public function Deletefiles()
{
    $this->load->helper('file');
    $path = 'http://localhost/CodeIgniter/media/file/abc.txt';
    delete_files($path, TRUE);
}

Codeigniter Email Helper – Codeigniter email helper provides various functions that are used to send the emails. $this->load->helper(’email’); is used to load the helper. This contains the functions – valid_email and send_email. Here in this tutorial we are going to explain how to send an email in codeigniter.

Codeigniter Email Helper Example

Now we will see how to load email helper in codeigniter and then use its function-

Load Email Helper

 
$this->load->helper('email');

Functions:-

Following functions are available in email helper.

• 1. Validate Email
• 2. Send Email

1. Validate_Email

Syntax of Validate_email function is

(valid_email($email))		

2. Send_Email

Syntax of Send_email function is

send_email($email,$subject,$message)		

EXAMPLE 1

Here is simple example to validate email.

public function ValidateEmail()
	{
		$this->load->helper('email');
		//$this->load->view('email_view');
		$email = 'sonukr321@gmail.com';
		
		if (valid_email($email))
		{
				echo 'email is valid';
		}
		else
		{
				echo 'email is not valid';
		}
	}

EXAMPLE 2

Here is simple example to send email.

public function sendemail()
	{
		$this->load->helper('email');
		//$this->load->view('email_view');
		$email = 'sonukr321@gmail.com';
		$subject = 'hello';
		$message = 'hi';
		if (send_email($email,$subject,$message))
		{
				echo 'sent succesfully';
		}
		else
		{
				echo 'unable to send';
		}
	}

Codeigniter Download Helper Codeigniter download helper enables you to download data from server to your system. It is very easy to use the download helper. Here in this tutorial we are going to explain how you can load this helper and use it’s functions.

Codeigniter Download Helper | Load | Syntax Example

Let us first see how to load download helper in codeigniter and then use its function-

Load Download Helper

$this->load->helper('download');

Functions

Following functions are available in download helper.

force_download

Syntax of force_download function is-

force_download($filename , $data, $set_mime)

Parameters-

Following parameters are accepted by force_download function-

• $filename(string) – Name of file.
• $data(mixed) Content of file.-
• $set_mime(bool) – Whether to try to send the actual MIME type

Return Type-

Return Type of this function is void.

Example 1

Here is simple example to download the image.

$this->load->helper('download');
force_download('/img/myimage.jpg', NULL); 

Example 2

$this->load->helper('download');
$data = 'This is dummy content';
$name = 'myFile.txt';
force_download($name, $data);