Difficulty of defining charset in PHP [duplicate]

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Difficulty of defining charset in PHP [duplicate]

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I tried to make a program that assigns a certain color sequence to all the characters, but the result is not as expected and everything indicates that there is a "charset " setting.

Then I'm going to put the code together with an image of the test output in the expectation that someone will tell me what I'm doing wrong.

<!DOCTYPE html>
<html lang="pt-br">
<head>
    <meta charset="utf-8" />
    <title>Mudar a cor das letras</title>
</head>
<body>
    <?php
      header('Content-type: text/html; charset=utf-8');
      $cor=array("blue","#00b300","red","black","#ff9900","#ff0066",
                 "#cc00cc","#00ccff","#336600","#996600","#ff00ff","#66ccff");
      $nelcor=count($cor);
      $texto="educação123";
      echo $texto; echo "<br/>";
      $nletras1=strlen($texto);//??? conta mais caracteres ex: ã=2
      $nletras=mb_strlen($texto, 'utf8');
      echo "strlen= ".$nletras1."<br>"."mb_strlen= ".$nletras."<br>"; 

      if ($nletras==0) {
        echo "Não há texto"; goto fim;
      }

      $vtexto = str_split($texto);//transformar string (cadeia ou texto) em array 
      (vector)
      $contador = 0; //ler letra a letra todo o texto
      while($contador <= $nletras-1) {
          $ncor=$contador%$nelcor;
          echo "<font size='5' color=$cor[$ncor]>$vtexto[$contador]</font>"; 
          $contador++;
      } 
      fim:;
    ?>
</body>
</html>

php character-encoding xampp localhost

asked by anonymous 04.12.2017 / 20:12

1 answer

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score 0 · Accepted Answer

str_split does not work with unicode

Use preg_split('//u', $texto, null, PREG_SPLIT_NO_EMPTY); and save the document as UTF-8 without BOM , like this:

<!DOCTYPE html>
<html lang="pt-br">
<head>
<meta charset="utf-8" />
<title>Mudar a cor das letras</title>
</head>
<body>
<?php
header('Content-type: text/html; charset=utf-8');
$cor=array("blue","#00b300","red","black","#ff9900","#ff0066",
"#cc00cc","#00ccff","#336600","#996600","#ff00ff","#66ccff");
$nelcor=count($cor);
$texto="educação123";
echo $texto;echo "<br/>";
$nletras1=strlen($texto);//??? conta mais caracteres ex: ã=2
$nletras=mb_strlen($texto, 'utf8');
echo "strlen= ".$nletras1."<br>"."mb_strlen= ".$nletras."<br>"; 
if ($nletras==0) {
echo "Não há texto"; goto fim;
}
$vtexto = preg_split('//u', $texto, null, PREG_SPLIT_NO_EMPTY);//transformar string (cadeia ou texto) em array 

$contador = 0; //ler letra a letra todo o texto
while($contador <= $nletras-1) {
$ncor=$contador%$nelcor;
echo "<font size='5' color=$cor[$ncor]>$vtexto[$contador]</font>"; 
$contador++;
} 
fim:;
?>
</body>
</html>