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  1. <?php
  2.  
  3. $text = "#id .class .anotherclass { color: #555 } #anotherid .class { color : #fff; }";
  4. function removespaces($matches)
  5. {
  6. return $matches[1].str_replace(" ", "", $matches[2]);
  7. }
  8. echo preg_replace_callback( "/(#.*?)(\{.*?\})/i", "removespaces", $text);
  9.  
Success #stdin #stdout 0.01s 20520KB
comments (?)
stdin 
Standard input is empty
stdout 
#id .class .anotherclass {color:#555} #anotherid .class {color:#fff;}
https://ideone.com/T5Qzc6
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
public

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