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  1. <?php
  2.  
  3. //inseguro
  4. $input = 'alert("ola")';
  5. echo $input;
  6.  
  7. //seguro
  8. $input_filter = filter_var($input, FILTER_SANITIZE_STRING);
  9. echo "<br>". $input_filter;
Success #stdin #stdout 0.02s 24400KB
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Standard input is empty
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alert("ola")<br>alert(&#34;ola&#34;)
https://ideone.com/Y2w9tr
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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