关于 数字 数组 in_array的问题
php当中$a 数组包含了1到100的数字if (in_array(1, $a){..........}这样会把11 、21。。等等带1的都判断进来了这样还是不行in_array(1, $a, TRUE)
求救 怎么在in array中 把1和 11 那些区分开
回复讨论(解决方案)
不知道你是如何测试的
if(in_array(1, array(11,21,31))) { echo '在';}else { echo '不在';}
肯定是你的$a有问题,楼主的结果是正常的
不知道你是如何测试的
if(in_array(1, array(11,21,31))) { echo '在';}else { echo '不在';}
我想达到以下效果,区别1和11和21等
if(in_array(1, array(1,11,21,31))) { echo '在';}if(in_array(1, array(11,21,31))){ echo '不在';}
有什么不对吗?
if(in_array( 1, array( 1,11,21,31))) {
echo '在';
}
1 在数组中,所以输出 在
反向要这样写
if( ! in_array(1, array(11,21,31))){
echo '不在';
}
有什么不对吗?
if(in_array( 1, array( 1,11,21,31))) {
echo '在';
}
1 在数组中,所以输出 在
反向要这样写
if( ! in_array(1, array(11,21,31))){
echo '不在';
}
嗯 反向判断不错。我怎么没有想到。
再问个问题,在html代码中 怎么让1句话按指定次数循环
比如 循环 你好 5次
在html代码中?要用 js
JS代码给说下啊
没啥问题,你在判断里面把a的值也输出
if (in_array(1, $a){
..........
}
这样会把11 、21。。等等带1的都判断进来了。
不会这样的。
<?php$a = array(11,12);var_dump(in_array(1, $a)); // false?>
boolean false
<?php$a = array(1,2);var_dump(in_array(1, $a)); // true?>
boolean true
有什么不对吗?
if(in_array( 1, array( 1,11,21,31))) {
echo '在';
}
1 在数组中,所以输出 在
反向要这样写
if( ! in_array(1, array(11,21,31))){
echo '不在';
}
嗯 反向判断不错。我怎么没有想到。
再问个问题,在html代码中 怎么让1句话按指定次数循环
比如 循环 你好 5次
<script>for(i=1;i<=5;i++){alert('你好')}</script>
有什么不对吗?
if(in_array( 1, array( 1,11,21,31))) {
echo '在';
}
1 在数组中,所以输出 在
反向要这样写
if( ! in_array(1, array(11,21,31))){
echo '不在';
}
嗯 反向判断不错。我怎么没有想到。
再问个问题,在html代码中 怎么让1句话按指定次数循环
比如 循环 你好 5次
<script>for(i=1;i<=5;i++){alert('你好')}</script>
应当是
<script type="text/javascript">for (i = 1; i <= 5; i++){document.write("您好")}</script>

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