我正在尝试根据从mysql检索到的用户信息来默认选中复选框。发货国家/地区是一个存储字符串USA|UK|Asia
的字段。要查看是否应检查每个复选框,我创建一个数组check_countries
来检查检索到的数据,如下所示
$country_html ="";
$check_countries = array("Europe","Americas","USA","Australia","UK","Africa","Asia","Global");
$shipping_countries = explode("|",$shipping_countries); // e.g USA|UK|Asia
foreach($shipping_countries as $shipping_country)
{
foreach($check_countries as $check_country)
{
if($check_country == $shipping_country)
{
$country_html .= "<label for='".$check_country."'><input id='".$check_country."' type='checkbox' name='shipcountries[]' value='".$check_country."' checked>".$check_country."</label>";
}
else
{
$country_html .= "<label for='".$check_country."'><input id='".$check_country."' type='checkbox' name='shipcountries[]' value='".$check_country."'>".$check_country."</label>";
}
}
}
然而,我得到了重复的结果。每个复选框都有自己的双胞胎彼此相邻:
我的预期输出应为:
<label for="Europe"><input id="Europe" type="checkbox" name="countries[]" value="Europe">Europe</label>
<label for="Americas"><input id="Americas" type="checkbox" name="countries[]" value="Americas">Americas</label>
<label for="USA"><input id="USA" type="checkbox" name="countries[]" value="USA" checked>USA</label>
<label for="Australia"><input id="Australia" type="checkbox" name="countries[]" value="Australia">Australia</label>
<label for="UK"><input id="UK" type="checkbox" name="countries[]" value="UK" checked>UK</label>
<label for="Africa"><input id="Africa" type="checkbox" name="countries[]" value="Africa">Africa</label>
<label for="Asia"><input id="Asia" type="checkbox" name="countries[]" value="Asia" checked>Asia</label>
<label for="Global"><input id="Global" type="checkbox" name="countries[]" value="Global">Global</label>
但现在它返回重复的结果:
○Europe ○Europe ○Americas ○Americas ○USA ○USA ○Australia ○Australia ○UK ○UK ○Africa ○Africa ○Asia ○Asia ○Global ○Global
<label for="Europe"><input id="Europe" type="checkbox" name="countries[]" value="Europe" checked="">Europe</label>
<label for="Europe"><input id="Europe" type="checkbox" name="countries[]" value="Europe">Europe</label>
<label for="Americas"><input id="Americas" type="checkbox" name="countries[]" value="Americas">Americas</label>
<label for="Americas"><input id="Americas" type="checkbox" name="countries[]" value="Americas">Americas</label>
<label for="USA"><input id="USA" type="checkbox" name="countries[]" value="USA">USA</label>
<label for="USA"><input id="USA" type="checkbox" name="countries[]" value="USA">USA</label>
<label for="Australia"><input id="Australia" type="checkbox" name="countries[]" value="Australia">Australia</label>
<label for="Australia"><input id="Australia" type="checkbox" name="countries[]" value="Australia">Australia</label>
<label for="UK"><input id="UK" type="checkbox" name="countries[]" value="UK">UK</label>
<label for="UK"><input id="UK" type="checkbox" name="countries[]" value="UK">UK</label>
<label for="Africa"><input id="Africa" type="checkbox" name="countries[]" value="Africa">Africa</label>
<label for="Africa"><input id="Africa" type="checkbox" name="countries[]" value="Africa" checked="">Africa</label>
<label for="Asia"><input id="Asia" type="checkbox" name="countries[]" value="Asia">Asia</label>
<label for="Asia"><input id="Asia" type="checkbox" name="countries[]" value="Asia">Asia</label>
<label for="Global"><input id="Global" type="checkbox" name="countries[]" value="Global">Global</label>
<label for="Global"><input id="Global" type="checkbox" name="countries[]" value="Global">Global</label>
谁能告诉我如何解决这个问题?
答案 0 :(得分:3)
您正在执行额外的foreach
,只需检查数组中是否存在密钥,您可以使用in_array
执行此操作。并显示所有,只需反转数组顺序
<?php
$shipping_countries = "USA|UK|Asia";
$check_countries = array("Europe","Americas","USA","Australia","UK","Africa","Asia","Global");
$shipping_countries = explode("|",$shipping_countries); // e.g USA|UK|Asia
foreach($check_countries as $check)
{
if(in_array($check, $shipping_countries))
{
$country_html .= "<label for='".$check."'><input id='".$check."' type='checkbox' name='shipcountries[]' value='".$check."' checked>".$check."</label>";
}
else
{
$country_html .= "<label for='".$check."'><input id='".$check."' type='checkbox' name='shipcountries[]' value='".$check."'>".$check."</label>";
}
}
echo $country_html;