Examples

Example #1 Examples of valid patterns

/<\/\w+>/
|(\d)-\d+|Sm
/^(?i)php[34]/
{^\s+(\s+)?$}

Example #2 Examples of invalid patterns

/href='(.*)' - missing ending delimiter
/\w+\s*\w+/J - unknown modifier 'J'
1-\d3-\d3-\d4| - missing starting delimiter

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