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@ 2017-09-14T15:23:29Z

<?php

trait HasTimestamps
{
    protected $timestamps = true;

    public function setCreatedAt($value)
    {
        echo 'HasTimestamps::setCreatedAt'.PHP_EOL;
        return $this;
    }

    public function setUpdatedAt($value)
    {
        echo 'HasTimestamps::setUpdatedAt'.PHP_EOL;
        return $this;
    }
}

trait ExtendHasTimestamps
{
    public function setCreatedAt($value)
    {
        echo 'ExtendHasTimestamps::setCreatedAt'.PHP_EOL;

        if ($value !== '') return $this;

        return parent::setCreatedAt($value);
    }

    public function setUpdatedAt($value)
    {
        echo 'ExtendHasTimestamps::setUpdatedAt'.PHP_EOL;

        if ($value !== '') return $this;

        return parent::setUpdatedAt($value);
    }
}

class Model
{
    use HasTimestamps;
}

class MyModel extends Model
{
    use ExtendHasTimestamps;
}

(new MyModel)->setCreatedAt('');

echo PHP_EOL;

(new MyModel)->setCreatedAt('time');

Output for 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: ExtendHasTimestamps::setCreatedAt HasTimestamps::setCreatedAt ExtendHasTimestamps::setCreatedAt
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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