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  1. <?php
  2. echo gettype($var) . ' - |' . $var . '| - ';
  3. $var;
  4. echo gettype($var) . ' - |' . $var . '| - ';
  5. $var = '';
  6. echo gettype($var) . ' - |' . $var . '| - ';
  7. $var = 'teste';
  8. echo gettype($var) . ' - |' . $var . '| - ';
  9.  
  10. //https://pt.stackoverflow.com/q/247899/101
Success #stdin #stdout #stderr 0.01s 82880KB
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stdin
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Standard input is empty
stdout
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NULL - || - NULL - || - string - || - string - |teste| -
stderr
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PHP Notice:  Undefined variable: var in /home/6wO3ck/prog.php on line 2
PHP Notice:  Undefined variable: var in /home/6wO3ck/prog.php on line 2
PHP Notice:  Undefined variable: var in /home/6wO3ck/prog.php on line 4
PHP Notice:  Undefined variable: var in /home/6wO3ck/prog.php on line 4
https://ideone.com/cbVqON
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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