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  1. <?php
  2.  
  3. $re = '~^id\h+"(.*)"(?:\Rid_p\h+"(.*)")?(?:\Rstr(?:\[\d])?\h*"")+$~m'; 
  4. $str = "id \"text 1\"\nstr \"\"\n\nid \"text 2\"\nstr \"\"\n\nid \"text 3\"\nstr \"\"\n\nid \"text 4\"\nstr \"\"\n\nid \"text 5\"\nstr \"\"\n\nid \"text 6\"\nid_p \"text 6-2\"\nstr[0] \"\"\nstr[1] \"\""; 
  5. $result = preg_replace_callback($re, function($m){
  6. 	$loc = $m[0];
  7. 	if (isset($m[2])) {
  8. 		$loc = str_replace('str[1] ""','str[1] "' . $m[2] . '"', $loc);
  9. 	}
  10. 	return preg_replace('~^(str(?:\[0])?\h+)""~m', "$1\"$m[1]\"",$loc);
  11. }, $str);
  12.  
  13. echo $result;
Success #stdin #stdout 0s 52488KB
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stdin
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Standard input is empty
stdout
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id "text 1"
str "text 1"

id "text 2"
str "text 2"

id "text 3"
str "text 3"

id "text 4"
str "text 4"

id "text 5"
str "text 5"

id "text 6"
id_p "text 6-2"
str[0] "text 6"
str[1] "text 6-2"
https://ideone.com/8rvT3K
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
secret

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