waarde zoeken in variabele

<?php
$var = 'Peter weegt 76 kg';
?>

<?php
$var = 'Peter weegt 76 kg';
?>

<?php
echo preg_replace("#[^0-9]#", "\\1", "ik weeg 90 kg");
?>

<?php
echo preg_replace("#[^0-9]#", "\\1", "ik weeg 90 kg");
?>

<?php
echo eregi("#[0-9]+ kg#", "ik weeg 90 kg.", $array);
echo $array[0];
?>

<?php
echo eregi("#[0-9]+ kg#", "ik weeg 90 kg.", $array);
echo $array[0];
?>