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Php 如何在字符串中添加字符

php string

Php 如何在字符串中添加字符,php,string,Php,String,我有一根绳子 $str = "a,b,c,d,e"; 我希望将字符串转换为： $str_convert = "'a','b','c','d','e'"; 我该怎么办 像这样： $str = "a,b,c,d,e"; $items = split(",", $str); $convert_str = ""; foreach ($items as $item) { $convert_str .= "'$item',"; } $convert_str = rtrim($convert_st

我有一根绳子

$str = "a,b,c,d,e";
我希望将字符串转换为：

$str_convert = "'a','b','c','d','e'";
我该怎么办

像这样：

$str = "a,b,c,d,e";
$items = split(",", $str);
$convert_str = "";
foreach ($items as $item) {
   $convert_str .= "'$item',";
}
$convert_str = rtrim($convert_str, ",");
print($convert_str);
像这样：

$str = "a,b,c,d,e";
$items = split(",", $str);
$convert_str = "";
foreach ($items as $item) {
   $convert_str .= "'$item',";
}
$convert_str = rtrim($convert_str, ",");
print($convert_str);
尝试我的解决方案：

<?php
$str = "a,b,c,d,e";
$arr = explode(',',$str);
foreach ($arr as &$value) {
    $value = "'$value'";
}

$str_convert= implode(',', $arr);
echo $str_convert;

试试我的解决方案：


<?php
$str = "a,b,c,d,e";
$arr = explode(',',$str);
foreach ($arr as &$value) {
    $value = "'$value'";
}

$str_convert= implode(',', $arr);
echo $str_convert;



如果您想要使用函数式编程编码风格的不同解决方案，请参阅：


<?php
$str = 'a,b,c,d,e';

$add_quotes = function($str, $func) {
    return implode(',', array_map($func, explode(',', $str)));
};


print $add_quotes(
    $str,
    function ($a) {
        return "'$a'";
    }
);



如果您想要使用函数式编程编码风格的不同解决方案，请参阅：


<?php
$str = 'a,b,c,d,e';

$add_quotes = function($str, $func) {
    return implode(',', array_map($func, explode(',', $str)));
};


print $add_quotes(
    $str,
    function ($a) {
        return "'$a'";
    }
);