Why Does `strtotime()` Fail with dd/mm/YYYY and How Can I Fix It?

strtotime() Struggles with dd/mm/YYYY Format

When working with thestrtotime()function, it's important to be aware of its date format limitations. While it supports a range of formats, it falters when dealing with the dd/mm/YYYY format.

Solution: Convert dd/mm/YYYY to YYYY-mm-dd

To resolve this issue and convert a date in dd/mm/YYYY format to YYYY-mm-dd, consider the following simplified method:

$date = '25/05/2010';
$date = str_replace('/', '-', $date);
echo date('Y-m-d', strtotime($date));

Output:

2010-05-25

strtotime() Documentation

According to thestrtotime()documentation, dates in the m/d/y or d-m-y formats are interpreted based on the separator used. If the separator is a slash (/), the American m/d/y format is assumed. If the separator is a dash (-) or a dot (.), the European d-m-y format is assumed.

In our case, since dd/mm/YYYY uses a dash as a separator, it does not conform to either supported format. Hence, the conversion step using str_replace() is required to transform the date into the accepted d-m-y format before using strtotime().

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