In this PHP tutorial, you shall learn how to check if given string contains only numeric digits using preg_match() function, with example programs. PHP – Check if string contains only numeric digits To check if a string contains only numeric digits in PHP, callpreg_match()function and pass...
ctype_alnum(string$text)://检查是否是字母或数字或字母数字的 组合ctype_alpha(string$text):checkforalphabeticcharacter(s)//检查字符串是否是字母ctype_cntrl(string$text):checkforcontrolcharacter(s)//是否是控制字符如\n,\r,\tctype_digit(strint$text):checkfornumericcharacter(s)//是否是数字表示的字...
($s,"",$filename); } //PHP判断数组维度 //...获取随机序列(注:实测数字最好9位一下) //echo random(9,1); //echo random(25); function random($length, $numeric = 0) { PHP_VERSION...= 'mail()') { } if ($m->cfg['mailMethod'] == 'smtp') { include_once "lib/smtp.class...
php $t=date("H");if($t<"20"){echo"Have a good day!";}$t=date("H");if($t<"20"){echo"Have a good day!";}else{echo"Have a good night!";}$t=date("H");if($t<"10"){echo"Have a good morning!";}elseif($t<"20"){echo"Have a good day!";}else{echo"Have a good...
if($num==="4476"){ die("no no no!"); } if(preg_match("/[a-z]/i", $num)){ die("no no no!"); } if(!strpos($num, "0")){ #strpos()函数查找字符串在另一字符串中第一次出现的位置并返回。 die("no no no!");
<?php function check_input($value) { // 去除斜杠 if (get_magic_quotes_gpc()) { $value = stripslashes($value); } // 如果不是数字则加引号 if (!is_numeric($value)) { $value = “‘” . mysql_real_escape_string($value) . “‘”; } return $value; } $con = mysql_connect(“...
{if($_POST['name'] ==$_POST['password'] ) {die('账号密码不能一致!'); }if(md5($_POST['name']) ===md5($_POST['password'])) {if(is_numeric($_POST['id'])&&$_POST['id']!=='72'&& !preg_match('/\s/',$_POST['id'])) ...
c=isnumeric(a) and is_numeric(b)程序本意是要a、b都为数字才会继续,但是当a为数字时,会先赋值给c,所以可能导致b绕过检测parse_url与libcurl对与url的解析差异可能导致ssrf 代码语言:javascript 代码运行次数:0 运行 AI代码解释 当url中有多个@符号时,parse_url中获取的host是最后一个@符号后面的host,而libcu...
$ret = dm_query("SELECT 1, 2 as c2, 3 as c3"); $col = dm_fetch_field($ret); if($col){ if($col->name != "1" || $col->table != "" || $col->auto_uniq != "-1" || $col->max_length != "10" || $col->numeric != "1" || $col->blob != "-1" || $col...
{ + if (!is_numeric($time)){ + if (strpos($time,"-")===false) return '未知'; + $time=strtotime($time); + } + return date('Y-m-d H:i:s',$time); +} +function format_date($time){ + if (!is_numeric($time)){ + if (strpos($time,"-")===false) return '未知'; ...