摘要：<?php $month = 9; // September (only has 30 days) $day = 31; // 31st $year = 2018; // 2018 if (checkdate($month, $day, $year)) echo "Date is valid"; e 阅读全文

摘要：<?php $paper['copier'] = "Copier & Multipurpose"; $paper['inkjet'] = "Inkjet Printer"; $paper['laser'] = "Laser Printer"; $paper['photo'] = "Photograp 阅读全文

摘要：<?php $a1 = "WILLIAM"; $a2 = "henry"; $a3 = "gatES"; echo $a1 . " " . $a2 . " " . $a3 . "<br>"; fix_names(); echo $a1 . " " . $a2 . " " . $a3; functio 阅读全文

摘要：<?php $level = $score = $time = 0; ?> <?php $month = "March"; if ($month == "March") echo "It's springtime"; ?> <?php $a = "1000"; $b = "+1000"; if ($ 阅读全文

摘要：<?php echo "Hello world"; ?> <?php /* This is a section of multi-line comments which will not be interpreted */ ?> <?php $mycounter = 1; $mystring = " 阅读全文