Php array to html attributes

php — How do I map an associative array to html element attributes?

I’m building a basic form building class to speed my workflow up a bit and I’d like to be able to take an array of attributes like so:

$attributes = array( "type" => "text", "id" => "contact-name", "name" => "contact-name", "required" => true ); Copy code

and map that to the attributes of a html element:

What is the cleanest way of achieving the above? I’m sure I could cobble something together with a loop and some concatenation but I get the feeling printf or similar could do it in a more elegant manner.

Answer

Solution:

I think this should do it:

$result = ' return $key.'="'.$attributes[$key].'"'; >, array_keys($attributes))).' />'; Copy code

Answer

Solution:

$attr = array( 'type' => 'text', 'id' => 'contact-name', 'name' => 'contact-name', 'required' => true, 'value' => '" html \'test\'' ); echo ', array_keys($attr), $attr )) .' />'; Copy code

Answer

Solution:

Something along these lines (a very simple method — of course you can extend this, but this will provide you with the basic functionality):

$output = " $value) < $output .= $key.'="'.$value.'" '; >$output .= "/>"; Copy code

Answer

Solution:

As http_build_query is meant for stringify associative array’s, I hoped to stumble upon such a solution here. Didn’t find one, so here’s my ‘one-liner’:

1. it converts boolean-values to 1/0 (instead of ommiting them if false, which can be achieved by using array_filter, but results in double function-calls);
2. doesn’t handle array’s in a desired way;
3. Needs urldecode after http_build_query to get back the encoded spaces (for example, when having multiple html-classes in an attribute).

So, only suitable in certain situations!

Answer

Solution:

$output = ' $value) < if (is_bool($value)) < if ($value) $output .= $name . ' '; >else < $output .= sprintf('%s="%s"', $name, $value); >> $output .= '>'; Copy code

 if ($value) $output .= $name . ' '; Copy code

 if ($value) $output .= sprintf('%s="%s"', $name, $name); Copy code

Answer

Solution:

This is a solution I use in my projects:

function html_attributes($attributes) Copy code

Answer

Solution:

$input_attrs = array( 'type' => 'text', 'placeholder' => 'Placeholder', 'value' => 'the value' ); //Use & for modify current item in array array_walk($input_attrs, function (&$item, $key) < $item = $key . '="' . $item . '"'; >); $input = ''; Copy code

Answer

Solution:

Old school PHP 4 — 5.2 version. This also allows for an array for the class attribute.

$attributes = array( "type" => "text", "class" => array("one", "two"), "id" => "contact-name", "name" => "contact-name", "required" => true ); printf( '', join(' ', array_map('mapAttr', array_keys($attr), array_values($attr))) ); function mapAttr($key, $value) < if (is_array($value)) < return mapAttr($key, join(' ', $value)); >if (is_bool($value)) < return $value ? $key : ''; >return sprintf('%s="%s"', $key, $value); > Copy code

Answer

Solution:

function html_attributes(array $array) < return implode(' ', array_map(function ($key, $value) < if (is_array($value)) < $value = implode(' ', $value); >return $key . '="' . htmlspecialchars($value) . '"'; >, array_keys($array), $array)); > Copy code

This one allow to use array of attribute’s value. Ex.

$attrs = [ 'class' => ['foo', 'bar'], 'id' => 'baz', ]; echo html_attributes($attrs); // -> `class="foo bar" ` Copy code

Answer

Solution:

function createDomElement($tag, $attributes, $inner = '', $closingTag = true) < return ', array_keys($attributes)))) . '>' . $inner . ($closingTag ? '' : ''); > Copy code

Answer

Solution:

This would be my solution, hope it helps!

• Used === to check for the boolean and that it’s true in a single check
• Used addslashes to escape double-quotes on value being placed inside double-quotes
• Looped on the array itself and updated its own values in preparation for implode
• Imploded the values together with a space which means there is no need to trim any white space. Any values turned into » as a result of the boolean check would simply not show up.

foreach($attr as $k=>$v) < $attr[$k] = $v===true?$k:"$k=\"".addslashes($v)."\""; >echo ""; Copy code

Answer

Solution:

Something I didn’t see yet, using php’s .

  'slow', 'ball' => false, 'globe' => true, ]; $attributes = array_reduce( array_keys( $attributeCollection ) , fn( $carry , $name ) => vsprintf( '%s %s="%s"' , [ $carry , $name , $attributeCollection[ $name ] , ]) ) $markup = ' '; echo $markup; Copy code

  vsprintf( '%s %s="%s"' , [ $carry , $name , $in[ $name ] , ] ) ); return $out; > $attributes = [ 'speed' => 'slow', 'ball' => false, 'globe' => true, ]; $markup = ' '; echo $markup; Copy code

  is_bool($in[$name]) && true !== $in[$name] # fn( $carry , $name ) => !$in[$name] ? $carry : vsprintf( '%s %s="%s"' , [ $carry , $name , is_bool($in[$name]) ? $name : $in[ $name ] , ] ) ); return $out; > $attributes = [ 'speed' => 'slow', 'ball' => false, 'globe' => true, ]; $markup = ' '; echo $markup; Copy code

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PHP

PHP (from the English Hypertext Preprocessor — hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites. The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
https://www.php.net/

HTML

HTML (English «hyper text markup language» — hypertext markup language) is a special markup language that is used to create sites on the Internet. Browsers understand html perfectly and can interpret it in an understandable way. In general, any page on the site is html-code, which the browser translates into a user-friendly form. By the way, the code of any page is available to everyone.
https://www.w3.org/html/

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Convert PHP array into HTML tag attributes separated by spaces

Solution:

You can also use this easy one line code, please follwo below code::

$array=array( 'attr1'=>'value1', 'id'=>'example', 'name'=>'john', 'class'=>'normal' ); $data = str_replace("=", '="', http_build_query($array, null, '" ', PHP_QUERY_RFC3986)).'"'; echo $data; Copy code

Answer

Solution:

I use the following function:

function buildAttributes($attributes) < if (empty($attributes)) return ''; if (!is_array($attributes)) return $attributes; $attributePairs = []; foreach ($attributes as $key =>$val) < if (is_int($key)) $attributePairs[] = $val; else < $val = htmlspecialchars($val, ENT_QUOTES); $attributePairs[] = "=\"\""; > > return join(' ', $attributePairs); > Copy code

It correctly escapes special html characters and supports boolean attributes (attributes without value). The following input:

[ 'name' => 'firstname', 'value' => 'My Name', 'required' ] Copy code

name="firstname" value="My Name" required Copy code

Answer

Solution:

Use a foreach loop to get the value and key.

$array = array( 'attr1'=>'value1', 'id'=>'example', 'name'=>'john', 'class'=>'normal'); foreach ($array as $key => $value) Copy code

If you wanted to use a function, you could just make your own such as the following.

$array = array( 'attr1'=>'value1', 'id'=>'example', 'name'=>'john', 'class'=>'normal'); echo buildTag($array); function buildTag ($array) < $tag = ''; foreach ($array as $key =>$value) < $tag .= $key . '="' . htmlspecialchars($value) . '" '; >return $tag; > Copy code

Answer

Solution:

You could also utilize array_map() in conjunction with array_keys() to build your $key=$value string.

Wrapped in array_filter() to remove empty items and ultimately use implode() to glue your items together.

$array = array( 'attr1' => 'value1', 'id' => 'example', 'name' => 'john', 'class' => 'normal', 'c' => null, 'd' => '', 'e' => '"abc"' ); $attributes = implode( ' ', array_filter( array_map( function ( $key, $value ) < return $value ? $key . '="' . htmlspecialchars( $value ) . '"' : false; >, array_keys( $array ), $array ) ) ); echo " "; Copy code

Answer

Solution:

The shortest one-line function to do that would be:

function add_attributes($attributes)< return urldecode(http_build_query(array_map(function($v)< return '"'.((string) $v).'"'; >, $attributes), '', ' ')); > Copy code

$array=array( 'attr1'=>'value1', 'id'=>'example', 'name'=>'john', 'class'=>'normal' ); echo ' '; Copy code

Answer

Solution:

You can use this function:

public static function arrayToStringTags( $array ) < $tags = ''; if(!(is_array($array) && !empty($array))) < return $tags; >foreach($array as $key => $value) < $tags .= $key. '="'. $value. '" '; >return $tags; > Copy code

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About the technologies asked in this question

PHP

PHP (from the English Hypertext Preprocessor — hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites. The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
https://www.php.net/

HTML

HTML (English «hyper text markup language» — hypertext markup language) is a special markup language that is used to create sites on the Internet. Browsers understand html perfectly and can interpret it in an understandable way. In general, any page on the site is html-code, which the browser translates into a user-friendly form. By the way, the code of any page is available to everyone.
https://www.w3.org/html/

Welcome to programmierfrage.com

programmierfrage.com is a question and answer site for professional web developers, programming enthusiasts and website builders. Site created and operated by the community. Together with you, we create a free library of detailed answers to any question on programming, web development, website creation and website administration.

Get answers to specific questions

Ask about the real problem you are facing. Describe in detail what you are doing and what you want to achieve.

Help Others Solve Their Issues

Our goal is to create a strong community in which everyone will support each other. If you find a question and know the answer to it, help others with your knowledge.

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