Question:
preg_match('<[ \w"=]+name="xhpc_composerid"[ \w="]+>',$exec,$result1);
echo $result1[0];
//input type="hidden" autocomplete="off" name="xhpc_composerid" value="u_0_1k"
preg_match('/value="[\w]+"/i',$result1[0],$result2);
echo $result2[0];
// value="u_0_1k"
$result3 = preg_replace('/value="/i',"ab123",$result2[0]);
echo $result3[0];
// a
$result4 = substr($result3[0],0,-1);
echo $result4;
// (vazio)
The question is, $result2 value="u_0_1k" , why does $result3 print a ? My regex should be correct, I expected something like: u_0_1k" , then in $result4 would print what it printed in $result3 but without the double quotes, what can I be wrong?
Answer:
I didn't fully understand what was being asked. Below is an example:
- extracting some parts (xml attributes)
- replacing a value with a new value.
based on your example
<?php
$exemplo='<xxx "type="hidden" autocomplete="off" name="xhpc_composerid" value="u_0_1k">';
preg_match('<.*? name="(.*?)".*? value="(.*?)".*?>',$exemplo,$result);
echo "id encontrado foi... $result[1]\n";
echo "valor encontrado foi... $result[2]\n";
$r = preg_replace('/(value=")(.*?)"/',"$1Novo valor", $exemplo);
echo "$r\n";
?>
when running ( php file ) produces:
id encontrado foi... xhpc_composerid
valor encontrado foi... u_0_1k
<xxx "type="hidden" autocomplete="off" name="xhpc_composerid" value="Novo valor>