function is_numeric() checks if the value passed as the argument is numeric : is_numeric « Reflection « PHP

1. PHP
2. Reflection
3. is_numeric

function is_numeric() checks if the value passed as the argument is numeric

 
<?php
$a = 1;
echo "is_numeric($a) = " . (is_numeric($a) ? "true" : "false") . "\n";

$a = 1.5;
echo "is_numeric($a) = " . (is_numeric($a) ? "true" : "false") . "\n";

$a = true;
echo "is_numeric($a) = " . (is_numeric($a) ? "true" : "false") . "\n";

$a = 'Test';
echo "is_numeric($a) = " . (is_numeric($a) ? "true" : "false") . "\n";

$a = '3.5';
echo "is_numeric($a) = " . (is_numeric($a) ? "true" : "false") . "\n";

$a = '3.5E27';
echo "is_numeric($a) = " . (is_numeric($a) ? "true" : "false") . "\n";

$a = 0x19;
echo "is_numeric($a) = " . (is_numeric($a) ? "true" : "false") . "\n";

$a = 0777;
echo "is_numeric($a) = " . (is_numeric($a) ? "true" : "false") . "\n";
?>
  
  

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