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<?php $str = '{"displayName":"Production","costs":[{"amount":"aa"}]}'; echo preg_replace('/"displayName":".*"/e', "xx", $str);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /in/dmgP6 on line 4
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /in/dmgP6 on line 4 Notice: Use of undefined constant xx - assumed 'xx' in /in/dmgP6(4) : regexp code on line 1 {xx}]}

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