如何修复 PHP 中的警告非法字符串偏移
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How to fix Warning Illegal string offset in PHP
提问by Jason
I have this chunk of PHP code which is giving me the error:
我有这块 PHP 代码，它给了我错误：
Warning: Illegal string offset 'iso_format_recent_works' in C:\xampp\htdocs\Manta\wp-content\themes\manta\functions.phpon line 1328
警告：C:\xampp\htdocs\Manta\wp-content\themes\manta\functions.php中第1328行的非法字符串偏移量 'iso_format_recent_works'
This is the code that the warning is relating to:
这是与警告相关的代码：
if(1 == $manta_option['iso_format_recent_works']){
$theme_img = 'recent_works_thumbnail';
} else {
$theme_img = 'recent_works_iso_thumbnail';
}
When I do an a var_dump($manta_option);I receive the follow result:
当我做 avar_dump($manta_option);我收到以下结果：
["iso_format_recent_works"]=> string(1) "1"
[“iso_format_recent_works”]=> 字符串（1）“1”
I have tried casting $manta_option['iso_format_recent_works']to an intbut still get the same issue.
我试过投射$manta_option['iso_format_recent_works']到 anint但仍然遇到同样的问题。
Any help would be greatly appreciated!
任何帮助将不胜感激！
回答by Adrian Preuss
Magic word is: isset
神奇的词是：isset
Validate the entry:
验证输入：
if(isset($manta_option['iso_format_recent_works']) && $manta_option['iso_format_recent_works'] == 1){
$theme_img = 'recent_works_thumbnail';
} else {
$theme_img = 'recent_works_iso_thumbnail';
}
回答by zion ben yacov
1.
1.
if(1 == @$manta_option['iso_format_recent_works']){
$theme_img = 'recent_works_thumbnail';
} else {
$theme_img = 'recent_works_iso_thumbnail';
}
2.
2.
if(isset($manta_option['iso_format_recent_works']) && 1 == $manta_option['iso_format_recent_works']){
$theme_img = 'recent_works_thumbnail';
} else {
$theme_img = 'recent_works_iso_thumbnail';
}
3.
3.
if (!empty($manta_option['iso_format_recent_works']) && $manta_option['iso_format_recent_works'] == 1){
}
else{
}
回答by Vignesh Pichamani
Please check that your key exists in the array or not, instead of simply trying to access it.
请检查您的密钥是否存在于数组中，而不是简单地尝试访问它。
Replace:
代替：
$myVar = $someArray['someKey']
With something like:
像这样：
if (isset($someArray['someKey'])) {
$myVar = $someArray['someKey']
}
or something like:
或类似的东西：
if(is_array($someArray['someKey'])) {
$theme_img = 'recent_works_iso_thumbnail';
}else {
$theme_img = 'recent_works_iso_thumbnail';
}
