qidu 2019-12-04
echo 90.33 | egrep ‘^[+-]?(0|[1-9]*)\.?[0-9]+‘ echo 1000 | egrep ‘^[+-]?(0|[1-9]*)\.?[0-9]+‘ echo -99.99 | egrep ‘^[+-]?(0|[1-9]*)\.?[0-9]+‘ echo +90.33 | egrep ‘^[+-]?(0|[1-9]*)\.?[0-9]+‘
<?php. if (!empty($_POST)) {. $data1 = $_POST["data1"];$data2 = $_POST["data2"];$fuhao = $_POST["fuh
test-f /etc/resolv.conf &&echo"File /etc/resolv.conf found."||echo"File /etc/resolv.conf not found."