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<?php $params = 'folder=BP+Portrait+Award+2014&format=jpg&public_id=test_dtestddddd_test_1407335836timetamp=1407335836'; $urlSafeParams = preg_replace('#(?<=folder)*%2C#', ',', $params); print $urlSafeParams;
Output for 5.3.19 - 5.3.29, 5.4.9 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.20, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
folder=BP+Portrait+Award+2014&format=jpg&public_id=test_dtestddddd_test_1407335836timetamp=1407335836
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.18, 5.4.0 - 5.4.8
Warning: preg_replace(): Compilation failed: nothing to repeat at offset 11 in /in/k79Ah on line 4
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: nothing to repeat at offset 11 in /in/k79Ah on line 4

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