我正在使用wordpress插件Ultimate Membership Pro。我的代码中有一个小警告。我无法弄清楚问题是什么。警告:preg_replace_callback():需要参数2,才能成为有效的回调
我试着检查PHP手册,也做这个主题的研究,但无法解决它。任何人有一个想法如何解决它?只需要一个提示。
PHP代码:
原始代码:
if (!empty($data->history)){
//print the history
$dat = preg_replace('!s:(\d+):"(.*?)";!e', "'s:'.strlen('$2').':\"$2\";'", $data->history);
$dat = unserialize($dat);
if (isset($dat) && is_array($dat)){
foreach ($dat as $k=>$transaction_history_arr){
if (is_string($transaction_history_arr)){
//is json
$json = stripslashes($transaction_history_arr);
if ($k){
echo '<h4>' . date('Y-m-d H:i:s', $k) .'</h4>';
}
$arr = (array)json_decode($json, true);
foreach ($arr as $key=>$value){
echo $key.': '.$value.'<br/>';
}
} else {
//is an array
if ($k>0){
echo '<h4>' . date('Y-m-d H:i:s', $k) .'</h4>';
}
foreach ($transaction_history_arr as $key=>$value){
echo $key.' : '.$value.'<br/>';
}
}
}
}
}
错误:
Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /var/www/html/stock-market/wp-content/plugins/indeed-membership-pro/admin/includes/tabs/list_payments.php on line 44
更新与preg_replace_callback:
if (!empty($data->history)){
//print the history
print_r($data->history);
$dat = preg_replace_callback('!s:(\d+):"(.*?)";!e', "'s:'.strlen('$2').':\"$2\";'", $data->history);
$dat = unserialize($dat);
对于更新的输出是这样的:
Warning: preg_replace_callback(): Requires argument 2, ''s:'.strlen('$2').':"$2";'', to be a valid callback in /var/www/html/stock-market/wp-content/plugins/indeed-membership-pro/admin/includes/tabs/list_payments.php on line 44 2017-06-17 08:44:49
ihc_payment_type : paypal
details : ss
uid : 1
level : 2
order_id : 21
amount : 100.00
currency : USD
txn_id : 1_21_1497689089
message : success
我的数组是$数据 - >历史:
a:1:{i:1497689089;a:9:{s:16:"ihc_payment_type";s:6:"paypal";s:7:"details";s:2:"ss";s:3:"uid";s:1:"1";s:5:"level";s:1:"2";s:8:"order_id";s:2:"21";s:6:"amount";s:6:"100.00";s:8:"currency";s:3:"USD";s:6:"txn_id";s:15:"1_21_1497689089";s:7:"message";s:7:"success";}}
警告:
Warning: preg_replace_callback(): Requires argument 2, ''s:'.strlen('$2').':"$2";'', to be a valid callback in /var/www/html/stock-market/wp-content/plugins/indeed-membership-pro/admin/includes/tabs/list_payments.php on line 47
错误消息非常简单。我想你只需要'preg_replace'。 – smarx
@smarx我把它'preg_replace'改为'preg_replace_callback',并给我警告我的PHP不支持'preg_replace' php 7.x –
根据http://php.net/manual/en/function.preg-replace .php,应该在PHP 7中支持'preg_replace'。什么是确切的错误信息? – smarx