这是我的字符串:
$codes = 60textone_13, 120texttwo_14, 60textthree_15, 90textfour_16,
我删除了最后一个逗号:
$implode_comma = implode(', ', $codes);
我正在尝试删除“_number”,所以我希望我的字符串为:
$codes = 60textone, 120texttwo, 60textthree, 90textfour
我试图删除“_number”:
$variable = substr($implode_comma, 0, strpos($implode_comma, "_"));
但它只返回第一个元素:
60textone
我该如何解决这个问题?谢谢。
假设你的$codes
是一个字符串,如:60textone_13,120texttwo_14,60textthree_15,90textfour_16
(如果没有看到答案的结尾如何使它成为**)。
现在你可以像这样使用array-map:
$arr = explode(",",trim($str));
function removeNum($s) {
return substr($s, 0, -3);
}
$a = array_map("removeNum", $arr);
echo print_r($a, true);
如果数字不总是2位数使用:
substr($s, 0, strpos($s, "_"));
输出:
Array (
[0] => 60textone
[1] => 120texttwo
[2] => 60textthree
[3] => 90textfour
)
**如果不使用以下代码:
$codes = "60textone_13, 120texttwo_14, 60textthree_15, 90textfour_16,";
$str=preg_replace('/\s+/', '', rtrim($codes,",")); //remove spaces and last comma
这里:
<?php
$codes = '60textone_13, 120texttwo_14, 60textthree_15, 90textfour_16';
$codes = explode(', ', $codes);
$result = [];
foreach ($codes as $code) {
$result[] = preg_replace('/(_)\w+/', '', $code);
}
var_dump($result);
?>
输出:
array(4) { [0]=> string(9) "60textone" [1]=> string(10) "120texttwo" [2]=> string(11) "60textthree" [3]=> string(10) "90textfour" }
如果你想要字符串而不是数组,你可以内爆你的数组,只需在var_dump($result);
之前添加这段代码
$result = (implode(', ', $result));
试试这个
$str ="60textone_13,120texttwo_14,60textthree_15, 90textfour_16";
$codes = explode(',', $str);
foreach ($codes as $value) {
$variable[] = substr($value, 0, strpos($value, "_"));
}
$implode_comma = implode(',',$variable);
echo $implode_comma;
如果$codes
是一个字符串,你可以使用qzxswpoi正则表达式:
preg_replace()
如果$codes = "60textone_12, 120texttwo_13, 60textthree_14, 90textfour_15";
$no_number = preg_replace('/_\d+/', '', $codes);
echo $no_number;
是一个数组,你将循环遍历它们,使用$codes
匹配preg_replace
与正则表达式_number
:
/_\d+/
正则表达式的解释:
第一捕获组(_ \ d +)
$codes = array("60textone_13", "120texttwo_14", "60textthree_15", "90textfour_16");
foreach($codes AS $code) {
$new_code[] = preg_replace('/_\d+/', '', $code);
}
echo implode(',', $new_code);
匹配字符_字面意思(区分大小写)_
匹配一个数字(等于[0-9])\d
Quantifier - 尽可能多次匹配一次和无限次,根据需要回馈(贪婪)