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<?php $string = ' The quick brown fox jumped over the lazy dog.'; $patterns = array(); $patterns[0] = $x; $replacements = array(); $replacements[0] = ''; echo preg_replace('/^\s*/', '', $string); ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined variable $x in /in/NAdrh on line 4 The quick brown fox jumped over the lazy dog.
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
Notice: Undefined variable: x in /in/NAdrh on line 4 The quick brown fox jumped over the lazy dog.
Output for 7.3.32 - 7.3.33
The quick brown fox jumped over the lazy dog.
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: x in /in/NAdrh on line 4 The quick brown fox jumped over the lazy dog.

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