$25
replace a text by another in all custom field

with this code, "<div>this text</div>" is replaced by "<span>another text</span>" in all post_content



add_filter('the_content', 'replace_this_text');

add_filter('the_excerpt', 'replace_this_text');



function replace_this_text(){

$content = get_the_content($post->ID); 

$content = str_replace('<div>this text</div>','<span>another text</span>',$content); 

return $content;

}

i want to do the same thing in all custom_fied

Sébastien | French WordpressDesigner | 05/30/11 at 10:44am | Edit

(8) Possible Answers Submitted...

Last edited:
05/30/11
10:58am
Tamilmozhi Gunasekar says:
Hi..
You can use
```
add_filter('get_post_metadata', 'replace_this_text');
```
Also I guess the code
```
function replace_this_text(){

$content = get_the_content($post->ID); 

$content = str_replace('<div>this text</div>','<span>another text</span>',$content); 

return $content;

}
```
Should be
```
function replace_this_text($content){

$content = get_the_content($post->ID); 

$content = str_replace('<div>this text</div>','<span>another text</span>',$content); 

return $content;

}
```
Previous versions of this answer: 05/30/11 at 10:56am | 05/30/11 at 10:58am
- 05/30/11 11:00am
  
  Sébastien | French WordpressDesigner says:
  what the difference between the first code and the second ?
- 05/30/11 11:02am
  
  Tamilmozhi Gunasekar says:
  The first line
  
  function replace_this_text(){
  
  function replace_this_text($content){
- 05/30/11 11:12am
  
  Sébastien | French WordpressDesigner says:
  but get_the_content is ok to display the content, not to display the custom field, isn't it ?
- 05/30/11 11:16am
  
  Tamilmozhi Gunasekar says:
  Yes, You can just use get_the_content without using the $content attribute in the function or just use $content attribute and not use get_the_content line.
```
function replace_this_text(){

$content = get_the_content($post->ID); 

$content = str_replace('<div>this text</div>','<span>another text</span>',$content); 

return $content;

}
```
  or
```
function replace_this_text($content){

$content = str_replace('<div>this text</div>','<span>another text</span>',$content); 

return $content;

}
```
- 05/30/11 11:25am
  
  Sébastien | French WordpressDesigner says:
  that don't work :-/

Last edited:
05/30/11
11:04am

Erez S says:

In the custom fields filter you don't get the content as a parameter,so you have to get it manually using this line:
$content = get_the_content($post->ID);

BTW, I think you should use this code:



add_filter('get_post_metadata', 'replace_this_text_custom_fields');

function replace_this_text_custom_fields(){

global $post;

$content = get_the_content($post->ID); 

$content = str_replace('<div>this text</div>','<span>another text</span>',$content); 

return $content;

}

Previous versions of this answer: 05/30/11 at 11:04am

05/30/11 11:06am

Erez S says:
Anyway, you can use this plugin:
http://wordpress.org/extend/plugins/search-and-replace/
And to replace it inside all the posts, and then you won't have to add this filter
05/30/11 11:16am

Sébastien | French WordpressDesigner says:
but get_the_content is ok to display the content, not to display the custom field, isn't it ?
05/30/11 11:30am

Sébastien | French WordpressDesigner says:
that don't work :-/ another idea ?

05/30/11 11:39am

Erez S says:



add_filter('get_post_metadata', 'replace_text_custom_meta', 10, 4);



function replace_text_custom_meta($content, $postid, $metakey,$single) {

	if($single)

		return str_replace('<div>this text</div>','<span>another text</span>',get_post_meta($postid, $metakey, true));

	return get_post_meta($postid, $metakey, false);

}

Try this

05/30/11 11:39am

Erez S says:



add_filter('get_post_metadata', 'replace_text_custom_meta', 10, 4);



function replace_text_custom_meta($content, $postid, $metakey,$single) {

	if($single)

		return str_replace('<div>this text</div>','<span>another text</span>',get_post_meta($postid, $metakey, true));

	return get_post_meta($postid, $metakey, false);

}

Try this

05/30/11 11:41am

Sébastien | French WordpressDesigner says:
it seems that don't work

05/30/11 12:07pm

Erez S says:



add_action('wp_head', 'replace_text_custom_meta_head');



function replace_text_custom_meta_head() {

	global $post;

	$customs = all_my_customs($post->ID);

	print_r($customs);

	foreach($customs as $k=>$v){

		update_post_meta($post->ID, $k, replace_this_text($v));

	}

	update_option('meta_cache',serialize($customs));

}



add_action('wp_footer', 'replace_text_custom_meta_footer');



function replace_text_custom_meta_footer($content, $postid, $metakey,$single) {

	global $post;

	$customs = unserialize(get_option('meta_cache'));

	foreach($customs as $k=>$v){

		update_post_meta($post->ID,$k, replace_this_text($v));

	}

}



function all_my_customs($id = 0){

    //if we want to run this function on a page of our choosing them the next section is skipped.

    //if not it grabs the ID of the current page and uses it from now on.

    if ($id == 0) :

        global $wp_query;

        $content_array = $wp_query->get_queried_object();

        $id = $content_array->ID;

    endif;   



    //knocks the first 3 elements off the array as they are WP entries and i dont want them.

    $first_array = @array_slice(get_post_custom_keys($id), 3);



    //first loop puts everything into an array, but its badly composed

    foreach ($first_array as $key => $value) :

           $second_array[$value] =  get_post_meta($id, $value, FALSE);



            //so the second loop puts the data into a associative array

            foreach($second_array as $second_key => $second_value) :

                       $result[$second_key] = $second_value[0];

            endforeach;

     endforeach;



    //and returns the array.

    return $result;

}



add_filter('the_content', 'replace_this_text');

add_filter('the_excerpt', 'replace_this_text');

function replace_this_text($content)

{

	return str_replace('screenshot', '<span>another text</span>', $content);

}

This works 100%

05/30/11 12:20pm

Sébastien | French WordpressDesigner says:
not in my site (wp3.0.1)
because i use some plugins ?
05/30/11 12:45pm

Erez S says:
Make sure you have
<?php wp_head(); ?>
inside the <head> tag, and
<?php wp_footer(); ?>
Before the closing of the <body> tag. Otherwise it won't work
05/30/11 12:48pm

Erez S says:
BTW, where do you put the code? You have to put it inside the functions.php code, otherwise it won't work
05/30/11 12:50pm

Sébastien | French WordpressDesigner says:
al is weel but that don't work.
have you test in wp3.0.1 ?
05/30/11 12:51pm

Erez S says:
Yes...
Can you send me the whole theme to my email erezaton213@gmail.com ?

Last edited:
05/30/11
11:13am

AdamGold says:

function replace_me($content) {

  $content = str_replace('<div>this text</div>','<span>another text</span>',$content);

  return $content;

}



add_filter('get_post_metadata', 'replace_me');

05/30/11 11:16am

Sébastien | French WordpressDesigner says:
don't work

05/30/11 11:31am

AdamGold says:

Only way I can think of is to make another function instead of get_post_meta

function gold_get_post_meta($name, $post_id) {

  global $post;

  $custom_field = get_post_meta($name, $post_id, true);

   $custom_field = str_replace('<div>this text</div>','<span>another text</span>',$value);

  return $custom_field;

}

Then call gold_get_post_meta

05/30/11 11:33am

Sébastien | French WordpressDesigner says:
that's an idea... but that's not really what i need...

Last edited:
05/30/11
11:41am
Utkarsh Kukreti says:
There's no filter on custom fields that returns the field value, so I couldn't think of any straightforward way.

Try this out (Uses code from WP 3.1 source, should work in 3.1 or later).
```
add_filter('get_post_metadata', 'filter_post_meta', 10, 4);





function filter_post_meta($nothing, $object_id, $meta_key, $single)

{



	$meta_cache = wp_cache_get($object_id, 'post' . '_meta');



	if (!$meta_cache) {

		$meta_cache = update_meta_cache('post', array($object_id));

		$meta_cache = $meta_cache[$object_id];

	}



	if (!$meta_key)

		return $meta_cache;



	if (isset($meta_cache[$meta_key])) {

		if ($single)

			return replace_this_text(maybe_unserialize($meta_cache[$meta_key][0]));

		else

			return array_map('maybe_unserialize', $meta_cache[$meta_key]);

	}



	if ($single)

		return '';

	else

		return array();

}



function replace_this_text($content)

{

	return str_replace('<div>this text</div>', '<span>another text</span>', $content);

}
```
Previous versions of this answer: 05/30/11 at 11:41am
- 05/30/11 11:31am
  
  Sébastien | French WordpressDesigner says:
  sorry, that don't work.
  Have you another idea ?
- 05/30/11 11:42am
  
  Utkarsh Kukreti says:
  Had a minor typo. Please try the updated code. I've tested it on WP 3.1, and it works fine.
- 05/30/11 11:48am
  
  Sébastien | French WordpressDesigner says:
  that don't work on my site...
- 05/30/11 11:50am
  
  Utkarsh Kukreti says:
  How are you fetching the meta data in your theme / plugin?
- 05/30/11 11:54am
  
  Sébastien | French WordpressDesigner says:
  like that :
```
<?php echo "test : " .  get_post_meta($post->ID, 'adresse1', true); ?>
```
- 05/30/11 11:55am
  
  Utkarsh Kukreti says:
  And you get the original value back, or nothing? Also, where did you add the filter code I wrote?
- 05/30/11 12:02pm
  
  Sébastien | French WordpressDesigner says:
  OK, that work fine on another site (wp3.1) but not on the site of my client
  i don't know if it's because that's wp3.0.1 or because i use plugins
- 05/30/11 12:09pm
  
  Utkarsh Kukreti says:
  This filter on get_metadata was added in 3.1. There's no filter available for metadata in WP 3.0 - http://core.trac.wordpress.org/ticket/14766
- 05/30/11 12:09pm
  
  Sébastien | French WordpressDesigner says:
  arf, my client use 3.0.1
Last edited:
05/30/11
12:02pm
Spencer says:
As Utkarsh Kukreti said, there are no direct filters when outputting custom post meta. So, the easiest way may be to just replace your get_post_meta() call in the template file, with a custom function. Try putting this in functions.php:
```
function sebastien_fix_meta() {

	global $post;

	

	$content = get_post_meta( $post->ID, 'adresse1', true );

	$content = str_replace( '<div>this text</div>', '<span>another text</span>', $content );

	

	return $content;

}
```
And then instead of calling:
```
<?php echo "test : " .  get_post_meta($post->ID, 'adresse1', true); ?>
```
Do:
```
Test: <?php echo sebastien_fix_meta(); ?>
```
Previous versions of this answer: 05/30/11 at 12:02pm
Last edited:
05/30/11
12:11pm
Just Me says:
Not sure why you want that text changed but I guess it is too much trouble to change it manually in every post.

Isn't it more logical to change it in the database so you don't have to execute a function every time a page loads?
- 05/30/11 12:51pm
  
  Sébastien | French WordpressDesigner says:
  thx but i need a function :-)
Last edited:
05/30/11
12:50pm
Tom Ransom says:
If this is a permanent change, then as Just Me indicated - change the database:

1) Backup your database (at least `postmeta`)
2) Backup your database - just in case you skipped step 1
3) No really, back it up

Use phpMyAdmin to access your specific database and go to the sql tab and use:

UPDATE `wp_postmeta` SET `meta_value` = REPLACE(`meta_value`, '<div>this text</div>', '' ) WHERE `meta_key` = 'YOUR CUSTOM META FIELD NAME';

IMPORTANT NOTES:
See steps 1-3 above
Your prefix might not be wp_
There are two kinds of quote marks above: back quotes surround the field names and vertical single quotes surround the data.

And did I mention, make a backup.

- Tom
Last edited:
06/01/11
3:35am

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