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<?php $a = array(1,2); $query = 'found {{$_the[\'test\'}}'; $_the['test'] = 'var'; preg_match('/({{\$(.*)}})/',$query,$matches); var_dump($matches[2]); var_dump(${$matches[2]}); $new = preg_replace('/({{\$(.*)}})/',${$matches[2]},$query); echo $new;
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(11) "_the['test'" Warning: Undefined variable $_the['test' in /in/ABV9F on line 8 NULL Warning: Undefined variable $_the['test' in /in/ABV9F on line 9 Deprecated: preg_replace(): Passing null to parameter #2 ($replacement) of type array|string is deprecated in /in/ABV9F on line 9 found
Output for 8.0.0 - 8.0.30
string(11) "_the['test'" Warning: Undefined variable $_the['test' in /in/ABV9F on line 8 NULL Warning: Undefined variable $_the['test' in /in/ABV9F on line 9 found
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
string(11) "_the['test'" Notice: Undefined variable: _the['test' in /in/ABV9F on line 8 NULL Notice: Undefined variable: _the['test' in /in/ABV9F on line 9 found
Output for 7.3.32 - 7.3.33
string(11) "_the['test'" NULL found
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
string(11) "_the['test'" Notice: Undefined variable: _the['test' in /in/ABV9F on line 8 NULL Notice: Undefined variable: _the['test' in /in/ABV9F on line 9 found

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