PHP: Regex preg_replace_callback to match all numbers in PHP - 


preg_replace_callback( "/[0-9]*/", array( &$this, '_getphpnumber' ), $code );  private function _getphpnumber( $matches ) {     return ( $this->_gethtmlcode( $matches[0], php::$colors['number'] ) ); }  private function _gethtmlcode( $text, $color ) {     $rows = array_filter( explode( "\n", $text ) );     $count = count( $rows );     $output = '';      ( $i = 0; $i < $count; $i++ ) {         $n = ( $count > 1 ? ( $i != $count - 1 ? "\n" : "" ) : "" );         $output .= "<span style=\"color:{$color};\">{$rows[$i]}</span>{$n}";      }      return ( $output ); }

the output of above this:

<span style="color:#ff0000;">152</span>

it works great, except if number 0, gets removed output. line causing issue $rows = array_filter( explode( "\n", $text ) ); in _gethtmlcode. exact cause array_filter. if remove it, output gets broken, 0's appear. if leave it, 0's removed.

any ideas on how fix this?

the man page array_filter has answer

if no callback supplied, all *entries of input equal false (see* converting boolean) be *removed.*

and believe 0 evaluates false.

i can't test @ moment believe work

$rows = array_filter( explode( "\n", $text ), 'is_string' );

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