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Test quotemeta() function : basic functionality
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/* Prototype : string quotemeta ( string $str )
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* Description: Quote meta characters
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* Source code: ext/standard/string.c
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echo "*** Testing quotemeta() : basic functionality ***\n";
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var_dump(quotemeta("Hello how are you ?"));
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var_dump(quotemeta("(100 + 50) * 10"));
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var_dump(quotemeta("\+*?[^]($)"));
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*** Testing quotemeta() : basic functionality ***
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string(20) "Hello how are you \?"
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string(19) "\(100 \+ 50\) \* 10"
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string(20) "\\\+\*\?\[\^\]\(\$\)"
b'\\ No newline at end of file'