'Preg replace' presentation slideshows

Regular Expression

Regular Expression. What are Regular Expressions. Regular expressions are a syntax to match text. They date back to mathematical notation made in the 1950s. Became embedded in unix systems through tools like ed and grep. What are RE.

836 views • 54 slides

Text manipulation

622 views • 52 slides

Text manipulation

711 views • 50 slides

FORM VALIDATION Faheem Ahmed Khokhar

FORM VALIDATION Faheem Ahmed Khokhar. Topics To be Covered. Introducing Server side Validation Checking Empty fields Checking field lengths Checking Ranges Checking formats (with Regular Expressions). Validation?. The act of validating; finding or testing the truth of something. Or

581 views • 43 slides

Regular expressions (contd.) -- remembering subpattern matches

Regular expressions (contd.) -- remembering subpattern matches. When a <pattern> is being matched with a target string, substrings that match sub-patterns can be remembered and re-used later in the same pattern

435 views • 36 slides

Regular Expressions

Regular Expressions. More complicated checks. It is usually possible to use a combination of various built-in PHP functions to achieve what you want. However, sometimes things get more complicated. When this happens, we turn to Regular Expressions. Regular Expressions.

417 views • 31 slides

Regular Expressions

Regular Expressions. More complicated checks. It is usually possible to use a combination of various built-in PHP functions to achieve what you want. However, sometimes things get more complicated. When this happens, we turn to Regular Expressions. Regular Expressions.

430 views • 31 slides

282 views • 5 slides