日常使用
截取替换
$bank_num= 1234567891231496;
substr_replace($bank_num, '*****', 6, 8)
$bank_num是整数,'*****'替换内容,6是开始位数,8是替换个数
floatval用于获取变量的浮点值。
$var = '122.34343runoob';
$float_value_of_var = floatval ($var);
echo $float_value_of_var;
122.34343
explode(',', $list['hk_img']);数组转字符串
php 抓取页面内容
$html
=
file_get_contents
(
$url
);
//如果出现中文乱码使用下面代码
//$getcontent = iconv("gb2312", "utf-8",$html);
echo
"<textarea style='width:800px;height:600px;'>"
.
$html
.
"</textarea>"
;
$ch
= curl_init();
curl_setopt(
$ch
, CURLOPT_URL,
$url
);
curl_setopt(
$ch
, CURLOPT_RETURNTRANSFER, 1);
curl_setopt(
$ch
, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt(
$ch
, CURLOPT_FOLLOWLOCATION, 1);
$html
= curl_exec(
$ch
);
curl_close(
$ch
);
echo
"<textarea style='width:800px;height:600px;'>"
.
$html
.
"</textarea>"
;