Thanks for the report. That means something has messed up one of the entries in the schedules array. Can you check the return value of wp_get_schedules() and let me know if any of the elements in the array aren’t an array? For example there might be a null value in there. Edit: Reading your error message again, it looks like there’s an integer value directly in the schedules array.
I’ll see about adding a guard condition for this, but it does mean that some code or another plugin somewhere is inserting an invalid schedule into the array.
here is the output –
array(15) {
["interval"]=>
int(60)
["display"]=>
string(12) "Every Minute"
["weekly"]=>
array(2) {
["interval"]=>
int(604800)
["display"]=>
string(11) "Once Weekly"
}
["monthly"]=>
array(2) {
["interval"]=>
int(2592000)
["display"]=>
string(7) "Monthly"
}
["quarterly"]=>
array(2) {
["display"]=>
string(9) "Quarterly"
["interval"]=>
int(7776000)
}
["wf_scan_monitor_interval"]=>
array(2) {
["interval"]=>
int(60)
["display"]=>
string(22) "Wordfence Scan Monitor"
}
["everyhour"]=>
array(2) {
["interval"]=>
int(3600)
["display"]=>
string(10) "Every hour"
}
["every2hours"]=>
array(2) {
["interval"]=>
int(7200)
["display"]=>
string(13) "Every 2 hours"
}
["every4hours"]=>
array(2) {
["interval"]=>
int(14400)
["display"]=>
string(13) "Every 4 hours"
}
["every8hours"]=>
array(2) {
["interval"]=>
int(28800)
["display"]=>
string(13) "Every 8 hours"
}
["twicedaily"]=>
array(2) {
["interval"]=>
int(43200)
["display"]=>
string(11) "Twice Daily"
}
["daily"]=>
array(2) {
["interval"]=>
int(86400)
["display"]=>
string(10) "Once Daily"
}
["fortnightly"]=>
array(2) {
["interval"]=>
int(1209600)
["display"]=>
string(11) "Fortnightly"
}
["newsletter"]=>
array(2) {
["interval"]=>
int(300)
["display"]=>
string(17) "Every 300 seconds"
}
["hourly"]=>
array(2) {
["interval"]=>
int(3600)
["display"]=>
string(11) "Once Hourly"
}
}
Wordfence?
Thanks. So something on your site is incorrectly using the cron_schedules filter. Note the interval and display properties which should not exist on the top level array, these properties should be contained within a named schedule such as weekly.
Can you try temporarily deactivating your other plugins one by one to see if the error goes away?
Found it, a class hard one. A code snippet from long ago, hidden in the functions.php
