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<!DOCTYPE html> <html> <body> <?php $date = date('Y-m-d'); $a = date('Y-m-d', strtotime('+1 month', $date)); echo $a; ?> </body> </html>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
<!DOCTYPE html> <html> <body> Fatal error: Uncaught TypeError: strtotime(): Argument #2 ($baseTimestamp) must be of type ?int, string given in /in/5NFhd:7 Stack trace: #0 /in/5NFhd(7): strtotime('+1 month', '2017-01-11') #1 {main} thrown in /in/5NFhd on line 7
Process exited with code 255.
Output for 5.6.0 - 5.6.29, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
<!DOCTYPE html> <html> <body> Notice: A non well formed numeric value encountered in /in/5NFhd on line 7 1970-02-01 </body> </html>
Output for 7.3.32 - 7.3.33
<!DOCTYPE html> <html> <body> 1970-02-01 </body> </html>

preferences:
182.34 ms | 401 KiB | 192 Q