estratto in caratteri

Question

estratto in caratteri

5

4670 2012-10-16

Ho del codicein functions.php:

 function string_limit_words($string, $word_limit)
{
  $words = explode(' ', $string, ($word_limit + 1));
  if(count($words) > $word_limit)
  array_pop($words);
  return implode(' ', $words);
}

ma devo limitare l'estratto alnumero di caratteri, potresti aiutarmiin questo?

I have code in functions.php:

function string_limit_words($string, $word_limit)
{
  $words = explode(' ', $string, ($word_limit + 1));
  if(count($words) > $word_limit)
  array_pop($words);
  return implode(' ', $words);
}

but i need to limit excerpt in number of characters, could you help me with that?

fonte
Marcin

4 risposta

voti

2

2012-10-16

Utilizza lafunzione utf8_truncate() da questa risposta e fatti strada combattendowp_trim_excerpt().

Codice diesempio,nontestato:

 add_filter( 'excerpt_more', 'wpse_69436_excerpt_more' );

function wpse_69436_excerpt_more( $more )
{
    add_filter( 'wp_trim_excerpt', 'wpse_69436_trim_excerpt' );
    // we remove the more text here
    return '';
}

function wpse_69436_trim_excerpt( $excerpt )
{
    return utf8_truncate( $excerpt, 300 );
}

Use the function utf8_truncate() from this answer and fight your way through wp_trim_excerpt().

Sample code, not tested:

add_filter( 'excerpt_more', 'wpse_69436_excerpt_more' );

function wpse_69436_excerpt_more( $more )
{
    add_filter( 'wp_trim_excerpt', 'wpse_69436_trim_excerpt' );
    // we remove the more text here
    return '';
}

function wpse_69436_trim_excerpt( $excerpt )
{
    return utf8_truncate( $excerpt, 300 );
}

fonte
fuxia

- 1
- 2012-10-16
WordPress ha unfiltroper ciò che è convenientemente chiamatoexcerpt_lengthe accetta unnumero di caratteri quindi:

function custom_excerpt_length( $length ) { return 50; } add_filter( 'excerpt_length', 'custom_excerpt_length', 999 );

cambia 50 conil limite che desideri.

Aggiornaper commento @toscho:

questa è la soluzione sopra ancheper leparolee nonperi caratteri,quindieccone una veloce:

add_filter('the_excerpt','excerpt_char_limit'); function excerpt_char_limit($e){ return substr($e,0,50); }
WordPress has a filter for that which is conveniently named excerpt_length and it accepts a number of chars so:

function custom_excerpt_length( $length ) { return 50; } add_filter( 'excerpt_length', 'custom_excerpt_length', 999 );

change 50 to whatever limit you want.

Update per @toscho comment:

that is the solution above is for words as well and not for chars so here is a quick one:

add_filter('the_excerpt','excerpt_char_limit'); function excerpt_char_limit($e){ return substr($e,0,50); }
- Non èperi personaggi,èper leparole.
  
  That’s not for characters, it is for words.
  - 1
  - 2012-10-16
  - fuxia
- @toscho Mybad!aggiornato con una semplice soluzione
  
  @toscho My bad! updated with a simple solution
  - 0
  - 2012-10-16
  - Bainternet
- Comefunziona?lometto come "echo custom_excerpt_length ();"manonfunziona.
  
  How does it works? i put it as "echo custom_excerpt_length(); " but it doesn't work.
  - 0
  - 2012-10-16
  - Marcin
- Grazie,orafunziona,ma come dare la lunghezza di alcuniestrattiper laprimapagina?
  
  Thanks, now it works, but how to give some excerpts lengths for front page?
  - 0
  - 2012-10-16
  - Marcin
- @Bainternet - Ho dato: "add_filter ('the_excerpt2','excerpt_char_limit2'); funzioneexcerpt_char_limit2 ($e) { ritorno substr ($e,0,10); } "manonfunziona.
  
  @Bainternet - I gave: "add_filter('the_excerpt2','excerpt_char_limit2'); function excerpt_char_limit2($e){ return substr($e,0,10); }" but it doesn't work.
  - 0
  - 2012-10-16
  - Marcin

1

2017-11-06

Per unmodomigliore,puoi utilizzareilfiltro get_the_excerpt:

 function get_excerpt($excerpt="",$limit=140){

    $excerpt = preg_replace(" (\[.*?\])",'',$excerpt);
    $excerpt = strip_shortcodes($excerpt);
    $excerpt = strip_tags($excerpt);
    $excerpt = mb_substr($excerpt, 0, $limit);
    $excerpt = mb_substr($excerpt, 0, strripos($excerpt, " "));
    $excerpt = trim(preg_replace( '/\s+/', ' ', $excerpt));
    $excerpt = $excerpt.'...';
    return $excerpt;
}   
add_filter('get_the_excerpt',"get_excerpt");

Modifica $limit=140 conilnumero di caratteri che desideri. Anche se vuoiin modo diverso:

 add_filter('get_the_excerpt',function ($excerpt="",$limit=140){

    $excerpt = preg_replace(" (\[.*?\])",'',$excerpt);
    $excerpt = strip_shortcodes($excerpt);
    $excerpt = strip_tags($excerpt);
    $excerpt = mb_substr($excerpt, 0, $limit);
    $excerpt = mb_substr($excerpt, 0, strripos($excerpt, " "));
    $excerpt = trim(preg_replace( '/\s+/', ' ', $excerpt));
    $excerpt = $excerpt.'...';
    return $excerpt;
});

Ciòeviterà qualsiasi conflitto comeilnomeesistente dellafunzione get_excerpt.

For a better way, you can use the get_the_excerpt filter:

function get_excerpt($excerpt="",$limit=140){

    $excerpt = preg_replace(" (\[.*?\])",'',$excerpt);
    $excerpt = strip_shortcodes($excerpt);
    $excerpt = strip_tags($excerpt);
    $excerpt = mb_substr($excerpt, 0, $limit);
    $excerpt = mb_substr($excerpt, 0, strripos($excerpt, " "));
    $excerpt = trim(preg_replace( '/\s+/', ' ', $excerpt));
    $excerpt = $excerpt.'...';
    return $excerpt;
}   
add_filter('get_the_excerpt',"get_excerpt");

Change the $limit=140 to the number of characters you want. Also if you want in different way:

add_filter('get_the_excerpt',function ($excerpt="",$limit=140){

    $excerpt = preg_replace(" (\[.*?\])",'',$excerpt);
    $excerpt = strip_shortcodes($excerpt);
    $excerpt = strip_tags($excerpt);
    $excerpt = mb_substr($excerpt, 0, $limit);
    $excerpt = mb_substr($excerpt, 0, strripos($excerpt, " "));
    $excerpt = trim(preg_replace( '/\s+/', ' ', $excerpt));
    $excerpt = $excerpt.'...';
    return $excerpt;
});

That will make avoid any conflict like existing name of function get_excerpt.

@Nicolaipenso che dovremmoevitare di usare `mb_substr`perché alcune configurazioniphpperimpostazionepredefinitanon attivano lefunzionimb:/

@Nicolai i think we should avoid using `mb_substr` cause some php config by default doesn't activated mb functions :/
- 0
- 2018-02-26
- med amine hamza
Come letto [qui] (https://wordpress.stackexchange.com/a/11089/22534),WP ha unfallbackper questo.

As read [here](https://wordpress.stackexchange.com/a/11089/22534), WP has a fallback for it.
- 0
- 2018-02-26
- Nicolai

Nicolai · Accepted Answer · 2012-10-16

4

2012-10-16

Ho utilizzato questo codicein uno deimiei ultimiprogetti:

 function ng_get_excerpt( $count ){
  $permalink = get_permalink( $post->ID );
  $excerpt = get_the_content();
  $excerpt = strip_tags( $excerpt );
  $excerpt = mb_substr( $excerpt, 0, $count );
  $excerpt = mb_substr( $excerpt, 0, strripos( $excerpt, " " ) );
  $excerpt = rtrim( $excerpt, ",.;:- _!$&#" );
  $excerpt = $excerpt . '<a href="'.$permalink.'" style="text-decoration: none;">&nbsp;(...)</a>';
  return $excerpt;
}

L'hopreso da qui:

http://wordpress.org/support/topic/limit -excerpt-length-by-caratteri

https://stackoverflow.com/questions/10923955/make-function-that-limits-text-not-show-last-punteggiatura-mark

Hail vantaggio dinon consentire lapunteggiatura allafine e diterminare con l'ultimaparola completa

Utilizzo deifiltri come suggerito da @medhamza7 o @bainternet o @fuxia èpreferibile.

I used this code in one of my last projects:

function ng_get_excerpt( $count ){
  $permalink = get_permalink( $post->ID );
  $excerpt = get_the_content();
  $excerpt = strip_tags( $excerpt );
  $excerpt = mb_substr( $excerpt, 0, $count );
  $excerpt = mb_substr( $excerpt, 0, strripos( $excerpt, " " ) );
  $excerpt = rtrim( $excerpt, ",.;:- _!$&#" );
  $excerpt = $excerpt . '<a href="'.$permalink.'" style="text-decoration: none;">&nbsp;(...)</a>';
  return $excerpt;
}

I got it from here:

http://wordpress.org/support/topic/limit-excerpt-length-by-characters

https://stackoverflow.com/questions/10923955/make-function-that-limits-text-not-show-last-punctuation-mark

It has the advantage of not allowing punctuation on the end and ending with the last complete word

Using the filters as suggested by @medhamza7 or @bainternet or @fuxia is preferable.

Graziemilleper questo consiglio,unoefficienteperme è semplicemente semplice: "echo substr (get_the_excerpt (),0,30);"tratto daituoi link.

Very thanks for this advice, efficient one for me is just simple: "echo substr(get_the_excerpt(), 0,30);" taken from Your links.
- 0
- 2012-10-16
- Marcin
@ Marcin [`substr ()` si romperà] (http://wpengineer.com/2410/dont-use-strlen/).Non utilizzarlomai su dati codificati UTF-8.

@Marcin [`substr()` will break](http://wpengineer.com/2410/dont-use-strlen/). Never use it on UTF-8 encoded data.
- 0
- 2012-10-16
- fuxia