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<?php $string = 'paypal_merchant_email="sample@ymail.com"|paypal_verified_only="0"|payment_currency=""|sandbox="1"|sandbox_merchant_email="sample@ymail.com"|payment_logos=""|debug="0"|status_pending="W"|status_success="O"|status_canceled="D"|countries=""|min_amount="0"|max_amount="0"|secure_post=""|ipn_test=""|no_shipping="0"|address_override="0"|cost_per_transaction="0"|cost_percent_total="0"|tax_id=0|'; preg_match_all('/\|(.*?)="(.*?)"/', '|'.$string, $matches); $result = array_combine($matches[1], $matches[2]); print_r($result);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.13
Array ( [paypal_merchant_email] => sample@ymail.com [paypal_verified_only] => 0 [payment_currency] => [sandbox] => 1 [sandbox_merchant_email] => sample@ymail.com [payment_logos] => [debug] => 0 [status_pending] => W [status_success] => O [status_canceled] => D [countries] => [min_amount] => 0 [max_amount] => 0 [secure_post] => [ipn_test] => [no_shipping] => 0 [address_override] => 0 [cost_per_transaction] => 0 [cost_percent_total] => 0 )

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86.77 ms | 409 KiB | 5 Q