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<?php $single_quotes = 'This is a String'; $double_quotes = "This is a String"; echo $single_quotes; echo $double_quotes; $var = 'String'; $single_quotes_var = 'This is a '.$var; $double_quotes_var = "This is a $var"; echo $single_quotes_var; echo $double_quotes_var; $var = 'This'; $single_quotes_var_pre = $var . ' is a String'; $double_quotes_var_pre = "$var is a String"; echo $single_quotes_var_pre; echo $double_quotes_var_pre;
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 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
This is a StringThis is a StringThis is a StringThis is a StringThis is a StringThis is a String

preferences:
131.42 ms | 404 KiB | 181 Q